Sending in. When a speculator buys (or sells) stock through a broker with whom he has no
account he directs this broker to "send in" the transaction to a broker with whom he has an
account. The first broker merely executes the order; the second receives (or delivers) the stock.  
The first broker in such a case acts as a two-dollar broker and collects his fee from the second
broker, who charges the person for whom the stock was bought or sold the full commission the
same as if he (the second broker) had executed the order.  Another instance of sending in is when
a speculator transfers his account from one broker to another. In such a case he directs the
broker who was originally employed to send in or transfer his contracts to the second broker. It is
the same if he transfers only part of his account to another broker.