SPECIFIC GRAVITY TABLES. 



Name. 



Copper sulphate. 



' Zinc 



]Mas:nesium « 



''■' Cadmium 



^^ Chromic 

 ^° Coquimbite. 

 ^^ Copiapite. 

 ®- Raimondite. 

 ^^ Fibroferrite. 



Formula. 



CuS0,.5H,0. 



Zn S O^ 7 H, 0. 



Mg S O,. 7 H, 0. 



Mg S 0,. H, O. 

 Cd S O,. H, O. 

 3 Cd S O,. 8 H^ 0. 



Cr.,(SOj3.15H,0. 

 Fe^ (S 0,)3 9 H., O. 

 2Fe203.5S03.12H.,0 

 2FeA-3S03.7H20 

 2Fe.,0,.5SO,.27H,0 



Specific Gravity. 



2.297. 

 2.274. 

 2.254. 



Natural. 



2.2901. "j 



2.2422. \- 4.° 



2.2781. J 



2.302. 



2.2778. 



2.036, 



1.912. 



1.931. m. of 4. 



2.036. 



I-953- 



1-957. 



I •9534- 



1.751. 



1.6603. 



1.674. 



1 .660. 



1.6829,4.° 



1.751. 



1.685. 



1.675. 



1.636, I5?5. Epsomite, 



2.517. Kicserite. 



2.939- 

 3.05. 12.° 



1.696. 22.° 



2.0-2.1. 



2.14. 



3.T90-3.222. 



1.84. 



Boiling 

 Point. 



Melting 

 Point. 



AUTHORITIES. 



