25 MAY 1956, Page 35

tx hi 'T everything known about underwater U h r d ttra lion can be learnt

from Man and the ,It'a"erwater World, by Pierre de Latil and htted(Jarrolds, 25s.). Copiously illus- epu, it describes how one-man submarines been built out of dust-bins, barrels, ed skins, church bells and what appear suitue the forerunners of Victorian bathing nk,s. In short, the authors are now the ilio-rYi,e1°Ptedists Of the submarine world. In this they move resolutely from oceanography cuirneral to historic diving dresses in parti- thefa and conclude with a lengthy account of 81*n in fishing started by M. Cousteau. rentlY the only thing they don't say is that

nature protectionists are now worried about