grammes of pure sulphuric acid. But i pipette of this 

 acid is neutralized by 100 c. c. of the standardized alkali. 



.'. i c. c. of the alkali represents - =-01089 f H 2 SO 4 . 



But H 2 SO 4 neutralises (NH 3 ) 2 which contains 2 atoms of 

 nitrogen ; t. e., 2 + 32'o6-f 4X 16 = 98*06 parts by weight of 

 H 2 SO 4 is equivalent to (14 + 3) X 2 = 34 parts by weight of 

 NH 3 and 2x 14=28 parts by weight of N. 



.'. '01089 grammes by weight of H 2 SO 4 , or i c. c. of 



01080 x ^4 

 alkali represents ~? , - grammes of NH 3 



. -01089x28 . XT 



and - | r= grammes of N. 



.'. Every i c. c. of alkali used represents '00377586 



grammes of NHs 



and '00310952 grammes of N; 



and as albuminoid=6'33 x N, 



it also represents '003 1 0952 x 6^33 



= 0196832616 grammes of albuminoid. 



CHAPTER CXXXIV. 



ANALYSIS OP SOII,. 



TN analysing a sample of soil, for all ordinary agricultural 

 purposes, the following constituents alone are quanti- 

 tatively determined : 



(i) Moisture, (2) Organic matter, (3) Matters soluble 

 in water, (4) Nitrogen, (5) Potassium, (6) Phosphorus 

 Pentoxide, and (7) Lime. 



