Soon all the laughers that were left were the owners and crews of boats that had two non-association pilots. But their triumph was not very long-lived. For this reason: It was a rigid rule of the association that its members should never, under any circumstances whatever, give information about the channel to any 'outsider.' By this time about half the boats had none but association pilots, and the other half had none but outsiders. At the first glance one would suppose that when it came to forbidding information about the river these two parties could play equally at that game; but this was not so. At every good-sized town from one end of the river to the other, there was a 'wharf-boat' to land at, instead of a wharf or a pier. Freight was stored in it for transportation; waiting passengers slept in its cabins. Upon each of these wharf-boats the association's officers placed a strong box fastened with a peculiar lock which was used in no other service but one--the United States mail service. It was the letter-bag lock, a sacred governmental thing. By dint of much beseeching the government had been persuaded to allow the association to use this lock. Every association man carried a key which would open these boxes. That key, or rather a peculiar way of holding it in the hand when its owner was asked for river information by a stranger-- for the success of the St. Louis and New Orleans association had now bred tolerably thriving branches in a dozen neighboring steamboat trades--was the association man's sign and diploma of membership; and if the stranger did not respond by producing a similar key and holding it in a certain manner duly prescribed, his question was politely ignored. From the association's secretary each member received a package of more or less gorgeous blanks, printed like a billhead, on handsome paper, properly ruled in columns; a bill-head worded something like this--
STEAMER GREAT REPUBLIC.
JOHN SMITH MASTER
PILOTS, JOHN JONES AND THOMAS BROWN.
+-------------------------------------------------------------+
| CROSSINGS. | SOUNDINGS. | MARKS. | REMARKS. |
+-------------------------------------------------------------+
These blanks were filled up, day by day, as the voyage progressed, and deposited in the several wharf-boat boxes. For instance, as soon as the first crossing, out from St. Louis, was completed, the items would be entered upon the blank, under the appropriate headings, thus--
'St. Louis. Nine and a half (feet). Stern on court-house, head on dead cottonwood above wood-yard, until you raise the first reef, then pull up square.' Then under head of Remarks: 'Go just outside the wrecks; this is important. New snag just where you straighten down; go above it.'
The pilot who deposited that blank in the Cairo box (after adding to it the details of every crossing all the way down from St. Louis) took out and read half a dozen fresh reports (from upward-bound steamers) concerning the river between Cairo and Memphis, posted himself thoroughly, returned them to the box, and went back aboard his boat again so armed against accident that he could not possibly get his boat into trouble without bringing the most ingenious carelessness to his aid.
Imagine the benefits of so admirable a system in a piece of river twelve or thirteen hundred miles long, whose channel was shifting every day! The pilot who had formerly been obliged to put up with seeing a shoal place once or possibly twice a month, had a hundred sharp eyes to watch it for him, now, and bushels of intelligent brains to tell him how to run it. His information about it was seldom twenty-four hours old. If the reports in the last box chanced to leave any misgivings on his mind concerning a treacherous crossing, he had his remedy; he blew his steam-whistle in a peculiar way as soon as he saw a boat approaching; the signal was answered in a peculiar way if that boat's pilots were association men; and then the two steamers ranged alongside and all uncertainties were swept away by fresh information furnished to the inquirer by word of mouth and in minute detail.