Dimensions of Vessel. Length, over all, knightheads to taffrail, 82 feet; beam, 22 feet; depth, 14 feet; tonnage, 120; bowsprit, outboard, 40 feet 6 inches; spritsail yard, 34 feet 6 inches; foremast, main deck to top, 39 feet; total length, main [spar] deck to truck, 67 feet 6 inches; fore-yard, 47 feet 6 inches; foretopsail yard, 34 feet 1 2 inches; mainmast, deck to top, 46 feet; total, deck to truck, 81 feet; main yard, 53 feet; maintopsail yard, 38 feet 6 inches; mizzen mast, deck to top, 34 feet; total, deck to truck, 60 feet 6 inches; spanker yard, 54 feet 6 inches; boats, one on port side of deck, 17 feet long by 5 feet 2 inches wide; one on starboard side, 13 feet 6 inches long by 4 feet 9 inches wide. The above description "worked out" by Captain Collins, and in conformity to which his putative model of the "MAY FLOWER" was constructed, rests, of course, for its correctness, primarily, upon the assumptions (which there is no reason to question) that the "plates" of Admiral Paris, his sketches, working plans, dimensions, etc., are reliable, and that Captain Collins's mathematics are correct, in reducing and applying the Admiral's data to a ship of 120 tons. That there would be some considerable variance from the description given, in applying these data to a ship of 60 tons greater measurement (i.e. of 180 tons), goes without saying, though the changes would appear more largely in the hull dimensions than in the rigging. That the description given, and its expression in the model depicted, present, with considerable fidelity, a ship of the MAY-FLOWER'S class arid type, in her day,--though of sixty tons less register, and amenable to changes otherwise,--is altogether probable, and taken together, they afford a fairly accurate idea of the general appearance of such a craft. In addition to mention of the enlargements which the increased tonnage certainly entails, the following features of the description seem to call for remark.