446 



HYDRODYNAMICS 



* M. Venturi found, that when camphor ws deprived of the air which adhered to it, by placing it under the receiver of an air-pump, it 

 *s heavier than water deprived of its air by the same air-pump. See Memoirtu present^! a. I'lmtitut. torn. . p. 125, Paris, 1805. 



