260 



T. HAGA, AND Y. OSAKA. 



TABLE I. 



Strength of the hydrofluoric acid fuj by lime method, 279%, thj by siUca 

 method, 278%, mean 2-785%. 



Of this sohition from 1-2 to 2-9 grams were taken for eacli determination, 

 requiring from 10 to 39 ces. of decinorraal alkah. 



Titndinn tritlt l'otasmim liydroxide. 



