49 



Table XI] 7 . Nitrogen distribution in sphagnum-covered peat 

 livdrolyscd in the presence of nine times its weight of a mineral subsoil. 



Grams nitrogen 

 I II" 



I Per cent of total nitrogen 

 " I | "II | Av. 



1 These results are evidently incorrect and in the "average" column the 

 figures from the first column only are used. 



Table XV. Comparative analyses of sphagnum- cohered peat 

 hydrolyzed alone and in the presence of nine times its zveight of a min- 

 eral subsoil. 



1 Ninety gm. of subsoil contained 0.0441 gm. of soil nitrogen. 



12. Sphagnum-covered peat hydrolyzed in the presence of 

 metallic tin. This peat was hydrolyzed in the presence of a reduc- 

 ing agent because it was thought that the amount of "humin" nit- 

 rogen would be reduced, for according to Samuely (1902) the 

 formation of this dark colored product is due to an oxidative proc- 

 ess. Hlasiwetz and Habermann (1871 and 1873) hydrolyzed pro- 

 tein with hydrochloric acid in the presence of stannous chloride in 

 order that the solution should remain colorless. Cohn (1896-97 



