432 M. Berzelhis on Isomorphism as [June, 



Phosphate of lead Pb P 



Phosphate of copper. 



g, . from Ehrenbreitstein . . Cu^ P» + 5 Aq 



J, — — ^ from Liebethen Cu'^ P + 2 Aq 



Phosphate of aliunina. 



a. Wavellite AH Ps + 12Aq 



b. Lazulite from Kriglach. 



c. Calaite. 



d. Amblygonite L'^ P + Al* Ps 



e. Phosphate of alumina, with ammonia, 



from Isle Bourbon. 



Phosphate of uranium. 



a. Uranite Cas'p + 4UP + 48 Aq 



b. Chalkolite. Ca3 P- + 4 U P + 48 Aq 



Fluoric add. 



Fluates. 



Fluateoflime Ca F 



Fluateofyttria Y F 



Fluate of cerium. 



a. Neutral Ce» P 



b. With excess ofbase Ce< Js + 3 Aq 



Ce I 



c. Fluate of cerium and yttria 



Ca 



d. Yttrocerite q^ 



Y _ 



Fluate of alumina and soda 



Chryolite 3 Na F + Al P» 



Fluo-silicates. 



• • ■ • • ■ *•• 

 Choudrodite M* F + BP Si. M Fl + S M S 



Pycnite Al^Fs + 6AlSi. A Fl + 3 A S 



Topaz Al< P + 6 AlSi. A'' Fl + 3 A S 



