30 REPORT OF THE AGRICULTURAL RESEARCH 



the freezing point of cow's milk at Pusa was--555°C, at 

 Lyallpur - -547°, at Peshawar - -537°, and Buffalo's milk 

 at Peshawar - -552°. The standard freezing point assumed 

 by Winter is--550°C, and a freezing point -• 537° C. is 

 equivalent to 2-36 per cent, of added water. Thus for 

 mixed milks 5 per cent, of added water could be detected 

 with certainty, whereas if dependence is placed on the per- 

 centage of solids-not-fat, there are cases where 10 per cent, 

 could not be sworn to. Using Pusa cow's milk, to which 

 known amounts of water were added, the freezing point 

 indicated the following percentages of water :- 



Indicated. Actual. 



5-6 5-0 



10-9 10-0 



19-0 20 



21 S 25-0 



VIII. — Programme of work for 1914-15. 

 Major subjects: — 



1. Examination of the sugarcane and sugar-beet crops 

 at Peshawar and the storage of these crops in " clamps." 



2. Experiments on possible improvements in the refin- 

 ing of saltpetre will be continued. 



3. Records of the amount and nature of drainage water 

 from fallow land and from land bearing crops are main- 

 tained. 



4. An investigation of certain of the constituents of 

 Lathyrus sat. is being conducted by the Supernumerary 

 Agricultural Chemist. 



5. The ratio of Argon to Oxygen and Argon to Nitrogen 

 in soil gases under certain specified agricultural conditions 

 is being determined. 



Minor subjects : — 



6. An attempt is being made to ascertain the nature of 

 the hydration of clay in soils. 



