New Forms of Stereometers. 



301 



On New Forms of Stereometers. By W. W. Haldane 

 Gee, B.Sc, F.C.S., and Arthur Harden, M.Sc, Ph.D. 



{Received March ijthy i8gi^ 



The problem of experimentally determining the volume 

 of a body to which the usual hydrostatic methods are 

 inapplicable was first attacked in 1797 by Capt. H. Say 

 {Annales de Chimie,X.X\ll, i),who described an instrument 

 (Fig. i) devised for the purpose of determining the specific 

 gravity of gunpowder. 



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Fic. I. 



