BAXTER. — ATOMIC WEIGHT OF PHOSPHORUS. 603 



very few hundredths of a milligram, while the gold-plated weights were 

 carefully standardized to hundredths of a milligram by the method 

 described by Richards, i*' 



Vacuum corrections were applied as follows: 



The following table, which gives the ratio of silver used to silver 

 bromide obtained in the same analysis, strengthens the view that 

 the precautions taken to prevent reduction of the silver salts by the 

 phosphorous compounds and occlusion by the silver bromide were 

 effective. 



" Jour. Amer. Chem. Soc, 22, 144 (1900). 



" These Proceedings, 42, 201 (1906); Jour. Amer. Chem. Soc, 28, 1322; 



Zeit. anorg. Chem., 50, 389. 



