Clifton College Scientific Society. 



71 



HYDEOUS SULPHATES. 



No. 



670 

 674 

 675 



677' 



679 



687 

 688 



462 

 723 



Name. 



Gj-psuui 



Do. Twins 



Do. In acicnlar crys- ' 



tals with Rock Salt , 



Do. Gi'oiip of twius . 



"Webstcrite 

 Alumite 



Formula. 



CaO, SO3 + 2 HO 



AI3 O.,, SO3 + 9 HO 

 ( K0,S03 +3A2 O3, \ 

 I SO., + 6 HO J 



Locality. 



Harz 

 London Clay 



Sabzburg 



Paris 



Cliesliu-e 

 Hasnierslieim, Neckar 



( Keuper beds, Peuartli 

 ( Cliff, Glamorgan 

 Newliaven, Sussex 



Tolfa, nr. Eome 



ANHYDEOUS PHOSPHATES, ARSENIATES, &c. 



