240 



BULLETIN OF THE UNITED STATES FISH COMMISSION. 



which gives the temperature of the air and surface water as observed at three light- 

 houses in the sponging region. It is stated by Bidder (loc. cit.) that * 4 the Levant 

 variety lives where the atlas shows a mean annual [air?] temperature of about 7 F. 

 below that of Florida, and the Adriatic variety at a mean temperature of about 7 F. 

 lower still." 



Statement of the mean air and surface icatrr ttnijnrninrcs at points on the coast of Florida in the 



ridnity of the sponge- fjromnlH. 



[Depths of water where observations are made: Fowey Rocks. 5 feet; Carysfort Reef, 3J feet; Dry Tortngas, 4 feet.] 



WASHINGTON, D. 0. 



