He may say, We do not choose to undertake responsibilities for negligence and accidents beyond our limits of carriage, where we have no means of preventing such negligence or accident; and we will not, therefore, undertake the carriage of your goods from A. to B., but we will be carriers as far as our line extends, or our vehicles go, and we will be carriers no further; but to protect you against the inconveniences and trouble to which you might be exposed if we only undertook to carry to the end of our line of carriage, we will undertake to forward the goods by the next carriers, and on so doing our liability shall cease, and our character of carriers shall be at an end; and for the purpose of so forwarding and of saving the trouble of two payments, we will take the whole fare, or you may pay as one charge at the end; but if we receive it we will receive it only as your agents for the purpose of ultimately paying the next carriers.