Well, the _Rochambeau_ arrived without untoward incident as she had done so often before and has done since. Another letter is that of a Yale senior, enlisted in the navy and one of the crew of a transport. "We looked very formidable as we steamed out of the harbor. An armored cruiser led the way and on either side a torpedo destroyer.... We proceed very cautiously. After sunset all lights go out. There is no smoking anywhere on board and not a light even in the stateroom. Then if we look out we see the other ships of the convoy--we hug one another closely--just stumbling through the water like phantom shapes--and that's the weirdest sight I have ever seen.... To-day we are having gun practice on board the transport--trial shots for the subs and the cruiser experimenting with balloon observers. Such are our interests.... Last night I had a wonderful experience. It was delightful--one of those that tickle my masculine pride. I was detailed in charge of a watch in the forward crow's-nest--a basket-like affair on the very top of the foremast about 150 feet from the water.... From the nest you get a wonderful view--a real bird's-eye view--for the men walking on the deck appear as pigmies, and the boats following in our trail look like dories. Our duty is to watch with powerful glasses for any traces of periscopes, and we are connected up with telephones to the gunners who are always ready for the 'call' and eager for action. This is only the first of the thrilling experiences which I expect, or, rather, hope to have." But that convoy arrived safely, too. The convoy, by the way, was largely an American idea, a departure from the policy of protecting a single vessel. A group of craft about to cross, sometimes as many as a score or more, are sent forth together under adequate protection of destroyers and cruisers. At night towing-disks are dropped astern. These are white and enable the rearward vessels to keep their distance with relation to those steaming ahead. The destroyers circle in and about the convoyed craft, which, in the meantime, are describing zigzag courses in order that submarines may not be able to calculate their gun or torpedo fire with any degree of accuracy. The destroyers shoot in front of bows and around sterns with impunity, leaving in their trail a phosphorescent wake. Sometimes in the case of a fast liner the destroyers, what with the high speed of the craft they are protecting and the uncertain course, narrowly escape disaster. As a matter of fact, one of them, the American destroyer _Chauncey_, was lost in this manner. But she is the only one. Here is a letter from a Yale man, a sailor, which contains rather a tragic story, the loss of the transport _Tuscania_ under British convoy: