106 



HATCH EXPERIMENT STATION. 



[Jan. 



or absorber of ammonia in manure composting ; investigation 

 work for the Association of Official Agricultural Chemists, 

 for the establishment of new and improved methods of 

 analyses of agricultural products, etc. The results of the 

 above-stated investigations will be published later, as in 

 the past, whenever the results prove of general interest to 

 the public. 



2. Notes on "Wood Ashes. 



During the season of 1901, 33.1 per cent, of the materials 

 forwarded for analysis consisted of wood ashes, as against 

 30.8 per cent, the previous year. 



The following table shows the general chemical character 

 of wood ashes that have been forwarded for investigation 

 during the season of 1901 : — 



Ayialysis of Wood Ashes. 



Constituents. 



NUMBEB OF Samples. 



Moisture below 1 per cent., 



Moisture from 1 to 10 per cent 



Moisture from 10 to 20 per cent., 



Moisture from 20 to 30 per cent., 



Moisture above 30 per cent., 



Potassium oxide above 8 per cent 



Potassium oxide from 7 to 8 per cent 



Potassium oxide from 6 to 7 per cent., 



Potassium oxide from 5 to 6 per cent., 



Potassium oxide from 4 to 5 per cent., 



Potassium oxide from 3 to 4 per cent 



Potassium oxide below 3 per cent., 



Phosphoric acid above 2 per cent 



Phosphoric acid from 1 to 2 per cent., 



Phosphoric acid below 1 per cent., 



Average per cent, of calcium oxide (lime), 



Per cent, of mineral matter insolulile in diluted hydrochloric 

 acid : — 

 Below 10 per cent., 



Between 10 and 15 per cent 



Between 15 and 20 per cent 



Above 20 per cent . . . 



1 



25 

 32 

 13 



1 



1 



6 

 12 

 25 

 11 



7 



7 



6 

 62 



4 

 32.51 



15 

 35 

 12 

 11 



2 



28 

 31 



7 



4 



5 

 17 

 24 

 10 



7 



1 



5 

 61 



2 

 33.20 



22 



24 



17 



4 



