Whether it is for the buyer to take possession of the goods or for the seller to send them to the buyer, is a question depending in each case on the contract, express or implied, between the parties. Apart from contract, or usage of trade to the contrary, the place of delivery is the seller's place of business, if he have one, and if not, his residence. Again, when by the contract of sale of goods no time for sending them has been fixed, the seller must send them within a reasonable time.

Vast quantities of goods are bought and sent forward to buyers, which are not to be delivered until payment. The Sales Act provides that where goods are shipped and by the bill of lading that is given for them they are to be delivered to the order of the buyer or of his agents, but possession of the bill of lading is to be retained by the seller or his agent, he thereby reserves his right to the possession of the goods as against the buyer. Very often a buyer of wheat, for example, will draw a bill of exchange on his principal or company living in the place where the goods are to be delivered and will have it discounted by a bank using the money to pay the seller. The wheat may be in an elevator, or it may be in transit. In either case the bank receives a document, elevator receipt, or bill of lading, and thus becomes the real owner of the wheat, and can control it afterward until it is actually delivered to the consignee, whoever he may be. This is the bank's security for making the loan. The bank sends forward the bill of exchange to its correspondent bank in the place where the consignee lives and the wheat is to be delivered with instructions to deliver it when the bill is paid.

Putnam's Handy Law Book for the Layman — Part 156

With respect to speculative sales of stock, so well known by every one, a contract, says Williston, giving one party or the other an option to carry out the transaction or not at pleasure, is not a wager, unless forbidden, as in some states is done by statute. A contract to sell goods in the future, which the seller does not own at the time is, aside from the statute, not only legal but common. "The test," says Williston, "adopted in the absence of statute, distinguishes between contracts to buy and sell in which the actual delivery of the property is contemplated, and similar contracts in which it is contemplated merely that a settlement shall be made between the parties based on fluctuations in the market price. A contract of the former kind is legal; one of the latter kind is a wagering contract, and illegal."

Putnam's Handy Law Book for the Layman — Part 156