108pp, folding plate, with 10 folding plates (illustrating 32 figs) at end,ûtables in text, original and attractive embossed blue cloth. AJS: Further lectures and discussions as a result of the loss of HMSûCaptain (1870)...were modern warships safe ?ûThis is the first edition.ûBruzelius: Lists an enlarged edition published in 1874 with 16 plates.