"They incline to the opinion that a sub-bailee can only be said for these purposes to have voluntarily taken into his possession the goods of another if he has sufficient notice that a person other than the bailee is interested in the goods so that it can properly be said that (in addition to his duties to the bailee) he has, by taking the goods into his custody, assumed towards that other person the responsibility for the goods which is characteristic of a bailee."
"Gratuitous quasi-bailment, or mutuum , is the loan of something which is not to be returned in specie, but which is to be replaced by something similar and equivalent. The contract of mutuum differs from that of gratuitous loan for use, or commodatum , in that in the latter a bare possession of the chattel lent, as distinguished from the property in it, vests in the borrower, the general property in it still remaining in the lender; whereas in mutuum that property in the chattel passes from the lender to the borrower. a) Mutuum is confined to chattels which are intended to be consumed and which are capable of being estimated by number, weight, or measure, such as money, corn, or wine. A familiar example is a housewife borrowing a packet of sugar from a neighbour. b) The essence of the transaction in the case of such loans is not that the borrower should return to the lender the identical chattels lent, for such specific return would ordinarily render the loan valueless, but that upon demand or at a fixed date the lender should receive from the borrower an equivalent quantity of goods of similar quality."