http://law.xmu.edu.cn/Media/Default/TeacherPictures/徐国栋.jpgOn the System of Commingling Incarnated in the Roman Law and in the Civil Code of China *

 

 

XU GUODONG

School of Law – Xiamen University

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SOMMARIO: 1. Introduction. – 2. Consensual commingling. – 3. Non-consensual commingling. – 4. Proculian and Sabinian pay attention to different commingling. 5. The Problem of Tracing in Roman Law. – 6. – The provisions on commingling in the Civil Code of China.

 

 

1. – Introduction

 

There are two words in Latin that indicate the system of commingling in the modern Civil Code. The first one is confusio, it means mingling of liquids or metals belonging to different owners which are in the same genus[1]. The second one is commistio, it refers to the mixing of solid objects belonging to different owners that are in same genus[2]. In fact, with the technology at that time, it was possible to mix liquids with solids, but Roman jurists did not mentioned this situation[3]. Of course, under modern technological conditions, it is possible to mix gases with liquids, as in the case of making sodas. Mixing between gases, such as oxygen and helium, may also occur. Therefore, the system of mingling in modern world is more broadly than that in the Roman world.

In the Digest of Justinian, the mingling system is stipulated in two places, include Book 6 about rei vindicatio, and Book 41 about the way of acquire ownership, it belongs a mode of accessio. This arrangement reveals the duality of the mingling system. In the first case, mingling sometimes occurs as a result of an infringement of others ownership, so it needs a rei vindicatio to protect the dominium ex iure Quiritium. On the other hand, because mixing sometimes leads to a change of ownership of the participant objects, sometimes mingling can also be considered as a way of acquiring ownership. In fact, regardless of the form of mingling, there are only two reasons why it occurs, one is with the consent of the parties, This situation is generally found in commercial law ; and the other is the opposite, It is generally found in tort law.

 

 

2. – Consensual commingling

 

Consensual commingling is the situation in which the parties agreed to mix their fungibles things, Gaius has a lot of research in this area[4].

 

D. 41.1.7.8 (Gaius libro secundo rerum cottidianarum sive aureorum): Voluntas duorum dominorum miscentium materias commune totum corpus efficit, sive eiusdem generis sint materiae, veluti vina miscuerunt vel argentum conflaverunt, sive diversae, veluti si alius vinum contulerit alius mel, vel alius aurum alius argentum: quamvis et mulsi et electri novi corporis sit species.

 

When two owners willingly mix their goods, the resultant whole is their common property, whether those goods be of the same kind, as when wines are mixed, or bars of silver worked together, or different, as when one contributes wine and the other honey or one gold and the other silver; this, despite the fact that the mead or the alloy has a new identity[5].

 

This fragment seems to be about the investors who mix their objects for forming a partnership for economic purpose. The first is that two or more investors forming a partnership with the same material, for example, wines belong to different owners are mixed in order to open a pub, or silver belongs to different owners are melt together for opening a jewelry store. The next situation is about two or more investors forming a partnership with different materials to produce a new product, such as one contributes wine and the other honey, then they produced the mead that serves as a healthy drink in Roman world, or one gold and the other silver, fuse them together to produce an electrum (it contains 1/5 of silver, 4/5 of gold)[6]. In the strict sense, it constitutes a kind of specificatio in the case of mingling different materials, because new thing are created. It should be noted that the mead and the electrums in this fragment means finished products. In the former case, the grapes used by the Romans to make wine were not as good as today's hybrid grapes with modern technology, as a result, the wine has a bitter taste and honey can improve the taste. In the daily life of the Romans, mead was also used as medicine to cure diseases[7]. In terms of the latter, electrum can be used as a coinage material, making it harder and more durable than pure gold, It can also be used as a dressing for the spires of obelisks[8].

In addition to partnerships result in consensual commingling, the following situations also lead to consensual commingling.

1. The mixed storage and transportation of fungible things. There were two kinds of freight in ancient Rome, the first situation is that the consignors packaged their objects separately in their own container, then handed them over to the carrier for transportation. In this case, these objects still belong to consignors, if the ship foundered and their objects are destroyed, then the consignor can sue the carrier for vindicatio or actio furti. Another case is, the objects for transportation were fungible thing, and were handed over to the carrier in order that they become his immediately, he had the objects belonging to different owners commingled for convenience. confusio occurs in the case in which the objects for transportation are liquid, such as olive oil and wine. commistio occurs in the case in which the objects for transportation are solid, such as wheat. Once the ship arrives at the port of destination, the carrier delivers the same quantity of objects to the consignee as the consignors delivered to the carrier[9]. The mixed storage and transportation of fungible thing is a system of Roman maritime law, which brings a lot of convenience to the three parties of the transport contract.

2. Depositum irregulare. This means a deposit of money or other fungibles wherein the depository had to return to the bailors not the same things, but the same quantity (tantundem) of money or things[10]. These objects from different bailors are mixed together, the depository acquires the ownership of them.

3. The commingling of coins (nummus). A deposit of an amount of money (coins) in a sealed bag is a normal depositum. But if different customers deposit their money in the bank, this situation is similar to depositum irregulare. Such deposits usually make with bankers who assumed the custody of the money[11]. But the commingling of coins can also happen by accident[12].

4. Mutuum. Roman banks could reserve and loan not only coins, but also grain, wine, and oil. When they loan this kind of objects, this loan is named as “crediti in natura”. When different customers reserve their grain, wine and oil in a bank, these objects’ commingling happened[13].

The characteristic of a consensual commingling is that the transfer of ownership, no one takes tort or stealing responsibility for commingling.

 

 

3. – Non-consensual commingling

 

Non-consensual commingling is the mixing of solid or liquid objects belonging to different persons caused by infringement or even theft. Such as a thief who has stolen some of my bottles of wine and poured them into his own vat to prevent me from finding them, then they were intermixed by chance, and not by the intention of the proprietors (I. 2.1.27)[14].

Sextus Pomponius (flourished in the middle of the 2nd century) had lots of discusses about this topic. The scholars after him have always cited his words when discussing this issue proves his authority. Ulpian and Paulus relayed his views when they discussing the case of ferruminatio.

 

D. 6.1.3.2 (Ulpianus libro 16 ad edictum): Pomponius scribit, si quid quod eiusdem naturae est ita confusum est atque commixtum, ut deduci et separari non possint, non totum sed pro parte esse vindicandum. Ut puta meum et tuum argentum in massam redactum est: erit nobis commune, et unusquisque pro rata ponderis quod in massa habemus vindicabimus, etsi incertum sit, quantum quisque ponderis in massa habet.

 

Pomponius writes that if substances of the same nature are so joined and mixed together that they cannot be detached and separated, the vindicatio should not be for the whole but for a part. Suppose that my silver and yours have been reduced into one mass; it will be owned by us in common, and each of us may vindicate a portion based on the weight of our share, even though it be uncertain how much in weight each of our shares actually is.

 

D. 6.1.4 (Paulus libro 21 ad edictum): Quo quidem casu etiam communi dividundo agi poterit: sed et furti et ad exhibendum tenebitur, qui dolo malo confundendum id argentum curavit: ita ut in ad exhibendum actione pretii ratio haberi debeat, in vindicatione vel communi dividundo actione hoc amplius ferat, cuius argentum pretiosius fuerat.

 

In that case the action for dividing common property can also be brought. Anyone who fraudulently arranged for the mixing of the silver will be liable to an action for theft and to an action for production. Just as in the action for production, account must be taken of the market price, so in a vindicatio or action for dividing common property, it is the party whose silver was more valuable who receives the greater amount[15].

 

These two fragments above-cited were about dealing with a fusion of fungible things, concretely speaking ,the confusio of the silver of different owners, that can be divided into two types of situation. The first one is non-consensual commingling, original owners who passively involved in confusio can bring the action of vindicatio pro parte. In this process what he demand is not the original object that has took part in confusio, but the its substitution of the same kind and amount. If the original owners who passively involved in confusio were uncertain his share, he could bring the action of vindicatio incertae partis. In this process the plaintiff cannot prove his share, and the amount awarded to him should depend on the decision of the judge, then the maker of confusio may suffer a lots in the cases. If the cause for non-consensual commingling is theft, the original owners who passively involved in confusio can bring the actio furti or actio ad exhibendum. The choose of actio furti is the result of the failure to bring a vindicatio, since the original object is no longer recovery, the original owner can bring an actio furti to punish the defendant. The theft could be divided into two kinds, furtum manifestum and furtum nec manifestum. The penalty for furtum manifestum is quadruple the value of the thing stolen, that for furtum nec manifestum is double (I. 4.1.5)[16]. The actio ad exhibendum usually served as a prelude of binging the action of rei vindicatio, the plaintiff firstly ask the defendant to exhibit the thing that he want to be restituted, if the defendant do it, the plaintiff might sue the defendant afterwards for recovery of it. if the defendant not do it, the plaintiff might ask the defendant to compensate his loss in the actio ad exhibendum[17]. Therefore, Paulus said that it must be taken consideration of the value of the thing in actio ad exhibendum. The second situation is consensual commingling, it makes the new thing as an object of common property. The method of dissolution of the communio is bring an actio communi dividundo, the shares of participants of commingling are not equal, but divide new thing in proportion to the contribution of each participant.

Ulpian then paraphrased the words of Pomponius about the commingling of different species.

 

D. 6.1.5.1 (Ulpianus libro 16 ad edictum): Idem scribit, si ex melle meo, vino tuo factum sit mulsum, quosdam existimasse id quoque communicari: sed puto verius, ut et ipse significat, eius potius esse qui fecit, quoniam suam speciem pristinam non continet. Sed si plumbum cum argento mixtum sit, quia deduci possit, nec communicabitur nec communi dividundo agetur, quia separari potest: agetur autem in rem actio. Sed si deduci, inquit, non possit, ut puta si aes et aurum mixtum fuerit, pro parte esse vindicandum: nec quaquam erit dicendum, quod in mulso dictum est, quia utraque materia etsi confusa manet tamen.

 

Again, he writes: «If mead is made from my honey and your wine, some jurists have held that it also is common property». I consider, however, as he himself suggests, that it belongs rather to the maker, since it does not retain its previous character. But if lead is mixed with silver, as it can be detached, the mixture will not become common, and because separation is possible, there will be no action for dividing common property; an action in rem may, however, be brought. If detachments not possible, for example, if bronze and gold have been mixed, he states that a vindicatio should be brought for a portion. What was said in regard to mead will not apply here since, although they are joined together, each substance still retains its character[18].

 

The Ulpian talked about three kind of fusion of the things with different substance in the fragment: (1) wine mixed with honey; (2) lead fused with silver, then they become niello, it is an alloy of silver, lead, copper and sulfur that is used to make metal mosaic; (3) bronze fused with gold, then they form an alloy of gold and copper, often used to make gold coins. For the second and third case, there is not dispute among jurists, in these two cases the object is reducible to its constituent parts and therefore does not form a communio, there is also no basis for actio communi dividundo. But for the first case, the new thing can not be reducible to its constituent parts, so there is a dispute among jurists about its appropriation. Pomponius and Ulpian think that the mead should belong to the maker, then the maker shall compensate the owner of the material for their loss. Other jurists hold that it also is an object of common property, this viewpoint is the result of the ignorance the difference between the accessio and the specificatio by the classical jurists[19]. It is not unusual for this situation, because it was the work of the medieval jurists to make specificatio independent of other forms of accessio, including commingling. However, Pomponius and Ulpian are at a high level and have distinguished between specificatio and commingling, because they say, the mead’s components have definitively lost their previous character.

Ulpian finally paraphrased the view of Pomponius about commixtio.

 

D. 6.1.5pr. (Ulpianus libro 16 ad edictum): Idem Pomponius scribit: si frumentum duorum non voluntate eorum confusum sit, competit singulis in rem actio in id, in quantum paret in illo acervo suum cuiusque esse: quod si voluntate eorum commixta sunt, tunc communicata videbuntur et erit communi dividundo actio.

 

Pomponius also writes: «If corn belonging to two parties has been mixed together without their consent, they each have an action in rem for as much of the heap as appears to be respectively theirs. If, however, the lots were mixed together with their consent, they will be deemed to have become common and there will be an action for dividing common property»[20].

 

This fragment also divides commixtio into two situations: consensual one and non-consensual one. In the former case, the participant who passively involved in commixtio has an actio in rem for his quota. In the latter case, there is a communio among the participants of commixtio.They can bring actio communi dividundo for ending this communio.

For the above discussion, Pietro Bonfante concluded that, under Roman Law, confusio and commistio do not leads to a getting or losing of ownership, but or leads a rei vindicatio pro parte to each of the owners, if objects were separable, or leads an actio communi dividundo, if objects were inseparable[21]. For this reason, all the sources about commingling above-cited situated in the Book 6 about rei vindicatio in the Digest, not in the Book 41 about the way of acquiring ownership. The reason of this arrangement is that the Roman jurists of the classical period understood primarily the system of commingling as a method of protecting ownership.

 

 

4. – Proculian and Sabinian pay attention to different commingling

 

Gaius and Pomponius were contemporaries, why they pay attention to different commingling? In my opinion, the reason is that these two jurists have different emphases in their thoughts. Gaius and his Sabinian school paid more attention to the positive role of consensual commingling in commercial law, while Pomponius and his Proculian school paid more attention to the destructive role of non-consensual commingling.

The Proculians and the Sabinians each showed their influence in the Justinian’s legislation. Justinian collected Pomponius’s words about commingling in his Digest, and adopted Gaius’s position to the commingling in his Institutes, juxtaposing commingling with the progeny of animals, alluvio, avulsio, insula in flumine nata, alveus derelictus, specificatio, intexere, inaedificatio, implantatio, scriptura, pictura and fructus. Therefor the treatment to commingling in the Justinian’s Institutes contains a conflict between substance and nominative, because it’s “substance” saying that commingling leads to communio, namely not leads to a getting or losing of ownership, but the title of this “substance” is the way of acquire ownership. This position to commingling as a way of acquiring ownership has a great influence to the schoolarship, all of modern researchers of the way of acquiring ownership study commingling in this framework[22]. Moreover, almost all of modern civil codes stipulated the system of commingling within the framework of the way of acquiring ownership.

 

 

5. – The Problem of Tracing in Roman Law

 

Although The Oxford Companion to Law puts the concept of commingling and tracing as the system of equity, we can find out the figure of actio de in rem verso in the text of entry on "tracing" in the Companion. According to the action, the slave’s owner, who has gotten a benefit from the peculium of the slave, must be liable to the trade counterparty of the slave to the extent of such benefit[23]. A lawsuit brought by the trade counterparty against the slave’s owner is a tracing to the value of the responsible property. In addition, as mentioned by Hugo Grotius (1583-1645), the property of the spouses become commingled together as a result of the marriage[24]. According to Roman law, the dotis brought into the husband's home by the wife should be commingled with the husband's property, its ownership belongs to the wife, and its right of management belongs to the husband. After the divorce, the husband should return the dotis to the wife in three installments within three years[25]. In this situation the things of dotis, such as most of movables, usually has transformed or changed hands and could not be return to the wife in their original condition. The wife's claim to return of the substitution of the things of dotis is also a kind of tracing for value. Third, the tracing is also involved in the system of collatio bonorum. Collatio bonorum is a system according to which the value of special gift received by the heir's children should be added to the total hereditas and deducted from the share of the receiver of above-said gift[26]. The process of collatio bonorum is the process of tracing the whereabouts of gifts expended from an hereditas. Fourth, according to Roman law, when strangers are named as heir, they have the deliberandi potestas, but, if one intermeddles with the administration of the inheritance, they do not have the right to abstaining from the succession[27]. One way to intervene in the administration of the hereditas is to commingle one's property with the hereditas. Fifth, there is the actio Pauliana in Roman law, which gives the creditor's right of revocation debtor's fraudulent transfer of property for avoiding execution of the bankruptcy law. If the money paid could be traced to the recipient's property after bringing the action, the praetor will order it to be returned[28]. Finally, according to the rules adopted by Justinian, an adrogator inherits only the adoptee's positive property, but not his debts. When the adoptive son's creditors collect the debt, the adoptive father may choose to pay the debt on behalf of the son. If he refuses, such creditors may take possession of the property brought into the adoptive father's family by the adoptive son and deal with them in the bankruptcy proceedings. This process is not other but tracing the adoptive son's property commingled with the adoptive father's property[29]. These six examples testify the existence of the system of commingling and tracing in Roman law, which apply respectively to bankruptcy law, family law, inheritance law  and adoption laws (but the commingling in inheritance laws is not dealt with tracing). Thus, the article 53 of the Ottoman Civil Code, which is based on Roman law, concludes like this: If the original object perished, the right to it is turn to its substitute object. Therefore,, if the property could not be restituted, the substitute shall be restituted[30]. Using the substitute object to cover the loss of the original thing is nothing but tracing. In modern times, English law has institutionalized the rules about the commingling and the tracing in Roman law, and firstly do it in bankruptcy law.

 

 

6. – The provisions on commingling in the Civil Code of China

 

Three articles of the Civil Code of China, promulgated on 28 May 2020, provide for the system of commingling. The first is article 322, which states: Where there is an agreement on the attribution of the property arising from processing, adjunction, or commingling, such an agreement shall prevail; in the absence of such an agreement or if such an agreement is ambiguous, the ownership shall be determined in accordance with the provisions of laws; if it is not provided for by laws, the ownership shall be determined under the principles of maximum use of the property and protection of innocent parties. If one party's fault or the determination of attribution of the property has caused any damage to the other party, compensation shall be made[31]. This article provides firstly for consensual commingling and secondly for non-consensual commingling, that is, commingling due to an accident or the infringement of one of the parties. Then stipulated the treatment of the commingling, requiring that when the new thing belongs to one contributor, he is obligated to compensate the other contributor. If damage is caused, it should be compensated. The second is paragraph 2 of the article 758 on the fate of the leased property after the termination of the financial lease contractWhen the parties agree that the leased property belongs to the lessor at the expiry of the lease term, if the lessee is unable to return the leased property because it is damaged, lost, attached to, or incorporated into another property, the lessor shall have the right to request the lessee to make reasonable compensation[32]. This paragraph stipulates the extended effectiveness of the lessor’ security interest when the leased object becomes part of other objects due to adjunction, commingling, represents the commercial law aspect of the commingling system, while the article 322 represents more the civil law aspect of the commingling system. The last one is the article 901, it says: If the custodian keeps the currency, it may return the currency of the same type and quantity; if it keeps other substitutes, it may return the same type, quality, and quantity of goods as agreed[33]. This article does not contain the word “commingling”, but contains the substance of mixed storage and the Depositum irregulare.

In my opinion, the paragraph 2 of the article 758 has made a mistake, because the object of financial lease contract can not be commingled. Only the fungible thing can be commingled, but the object of financial lease contract always are non-fungible things or specialized fungible things.

 

 



 

Translated into English by Wang Bingnong, Lin Shan and Tian Fangfang.

 

[1] See Adolf Berger, Encyclopedic Dictionary of Roman Law, Philadelphia: The American Philosophical Society, 1991, 407.

[2] Adolf Berger, Encyclopedic Dictionary of Roman Law, cit., 399.

[3] Cfr. Jacobus Perrenod, Dissertatio juridica inauguralis de accessione industriali, Lugduni Batavorum 1735, 23.

[4] But Gaius was also concerned with no-consensual commingling in D. 41.1.7.9 in which he said: The same holds good, even if this should happen without the consent of the two owners, whether of different or of similar materials. English- Language Translation Edited by Alan Watson, The Digest of Justinian, Volume 4, University of Pennsylvania Press, 1985, 3.

[5] English- Language Translation Edited by Alan Watson, The Digest of Justinian, Volume 4, cit., 3.

[6] Cfr. Giovanni Voet, Commento alle Pandette, Versione italiana curata da Antonio Bazzarini, Vol. V, Venezia 1839, 407.

[7] See Natural History (Rackham, Jones, & Eichholz)/Book 22.24, last modified September 1, 2020. https://en.wikisource.org/wiki/Natural_ History_(Rackham,_Jones,_%26_Eichholz)/Book_22

[8] See wikipedia, “electrum”, last modified September 12, 2020. https://zh.wikipedia.org/wiki/%E7%90% A5%E7%8F%80%E9%87%91

[9] D. 19.2.31. English- Language Translation Edited by Alan Watson, The Digest of Justinian, Volume 2, University of Pennsylvania Press, 1985, 109.

[10] Adolf Berger, Encyclopedic Dictionary of Roman Law, cit., 432.

[11] Adolf Berger, Encyclopedic Dictionary of Roman Law, cit., 432.

[12] D. 46.3,78. JAVOLENUS, From Cassius, book 11: Should another's coins be paid, without the knowledge or volition of their owner, they remain the property of him to whom they belonged; should they have been mixed, it is written in the books of Gaius [Cassius Longinus] that should the blending be such that they cannot be identified, they become the property of the recipient so that their [former] owner acquires an action for theft against the man who gave them. See English- Language Translation Edited by Alan Watson, The Digest of Justinian, Volume 4, cit., 228. This source means the buyer (emptor) pays with other people’s coins to the seller (venditor). The seller blend these coins with his own money, then the owner of coins evictio the seller. In this case, coins are blending that they cannot be identified, so the seller shall return the same kind and amount of coins. The reason for this is that Cassius believes that money can be consumed in use. Once coins are paid to sellers, they become the property of the recipient, the original object does not exist. But the former owner acquires an action for theft against the buyer.

[13] According to Gai. 4.66: The set-off against the argentarius can only be for things of the same genus and nature, such as money instead money, wheat instead wheat, wine instead wine. Gaius, Emil Seckel, “Gai Institutiones ediderunt E. Seckel et B. Kuebler”, in aedibus B.G. Teubneri, 1968, 219.

[14] The Institutes of Justinian, with English Introduction, Translation, and Notes by Thomas Collett Sandars, M. A., Chicago: Callaghan & Company, 1876, 172.

[16] The Institutes of Justinian, with English Introduction, Translation, and Notes by Thomas Collett Sandars, cit., 483.

[17] Adolf Berger, Encyclopedic Dictionary of Roman Law, cit., 463.

[18] See English- Language Translation Edited by Alan Watson, The Digest of Justinian, Volume 1, cit., 202.

[19] See Anna Plisecka, Accessio and Specificatio Reconsidered, in Tijdschrift voor Rechtsgeschiedenis 74, 2006, 49.

[20] See English- Language Translation Edited by Alan Watson, The Digest of Justinian, Volume 1, cit., 202.

[21] Pietro Bonfante, Istituzioni di Diritto Romano, Milano, Giuffrè Editore, 1987, 220.

[22] Cfr. Pasquale Voci, Modi di acquisto della proprietà (Corso di Diritto romano), Milano, Giuffrè, 1952, 266 s. Enrico dell'Aquila, L'acquisto della proprietà per accessione, unione, commistione e specificazione, Milano, Giuffrè, 1979, 266.

[23] See Li Fei, The Historical Reality of Actio de in Rem Verso in Roman Law and its Evolution in Modern Law, and also discusses the unification of translated terms, in Roman Law and Modern Civil Law Vol. 8, 2014, 45.

[24] See Hugo Grotius, The Introduction to Dutch Jurisprudence of Hugo Grotius, Now First Rendered into English by Charles Herbert, London: John Van Voorst, Paternoster Row., 1845, 108 s.

[25] See Zhou Nan, The Doctrine of Roman Law, The Commercial Press, Beijing 1994, 198.

[26] See Long Yifei – Dou Dongchen, The Application of the System of Inheritance Deduction in China, in Journal of Law Application Vol. 5, 2016, 62.

[27] I. 2.19.5. The Institutes of Justinian, With English Introduction, Translation, and Notes by Thomas Collett Sandars, M. A., cit., 293.

[28] See Max Radin, Fraudulent Conveyances at Roman Law, in Virginia Law Review Vol. 18, No. 2, 1931, 116.

[29] I. 3.10.3. The Institutes of Justinian , With English Introduction, Translation, and Notes by Thomas Collett Sandars, M. A., cit., 390.

[30] See Ottoman Civil Code, translated by Wang Yongbao, The Commercial Press, Beijing 2018, 8.

[31] See pkulaw.com, “Civil Code of the People's Republic of China”, Last modified November 24, 2021. https://pkulaw.com/en_law/aa00daaeb5a4fe4ebdfb.html

[32] See pkulaw.com, “Civil Code of the People's Republic of China”, Last modified November 24, 2021. https://pkulaw.com/en_law/aa00daaeb5a4fe4ebdfb.html

[33] See pkulaw.com, “Civil Code of the People's Republic of China”, Last modified November 24, 2021. https://pkulaw.com/en_law/aa00daaeb5a4fe4ebdfb.html