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(To face page 259.) 
(iii.) C.G.S. “Lady Evelyn.” From this ship were taken the phono- (iv.) Apparatus for the thermal measurement of the acoustic output 
meter observations for the long range acoustic surveys, the results of diaphone. 1 he skeleton construction of the iron-wire resistance 
of which are shown graphically in Charts 3 to 14. thermometers is clearly shown. 
