CONTENTS. 



II. Calcium arsenates and arsenites 

 Materials .... 



Pure acid calcium arsenate 



Commercial calcium arsenate 



Calcium metarsenite 

 Experimental work 



Pure acid calcium arsenate with 1 per cent milk of lime 



Commercial calcium arsenate with 1 per cent milk of lime 



Calcium metarsenite 



III. Notes on other arsenicals 



Magnesium arsenate . 



Zinc- arsenite 

 Summary .... 



PAGE 



89 

 89 

 89 

 90 

 91 

 92 

 92 

 94 

 96 

 96 

 96 

 96 

 98 



