102 EXPERIMENTAL FARMS 



5 GEORGE v.. A. 1915 



Laboratory Ko. 11^177. — 'Agricultural Lime.' V-V, L., and B. Co., Victoria, B. 

 C. In the form of a very fine white powder and specially recommended for agricul- 

 tural use. Occurring probably as a waste product in the burning of lime. 



Analysis. 



Carbonate of lime 67-34 



Caustic and slaked lime 21-73 



Mineral matter insoluble in acid 4-97 



Oxide of iron. etc. (undetermined) 5-96 



100-00 



It is, undoubtedly, a useful source of lime-for the treatment of soils and one from 

 which good results might be expected. 



Lahoroitory No. 168^5. — ' Agricultural Lime.' E. H., Agassiz, B.C. A very fine 

 and fiufi^y powder. Its source of manufacture could not be learned, but it is probably 

 the waste lime from kilns. 



Analysis. 



Carbonate of lime 48-75 



Caustic and slaked lime 44-60 



Mineral matter insoluble in acid -22 



Oxide of iron, alumina, magnesia, etc. (by difference) 6-43 



100-00 



From its composition as well as its physical condition, this should prove an excel- 

 lime for agricultural purposes. 



Superphosphate of Lime. 



lent lime 



Laboratory No. 16794.. — Sample forwarded from the Agricultural College, Truro, 

 N.S., and labelled ' Superphosphate of Lime containing soluble phosphates 36 per 

 cent.' From the United Alkali Co., Ltd., Pilkington Works. 



Our analysis showed total phosphoric acid 19.13 per cent, water-soluble phosphoric 

 acid, 16.09 per cent. 



If all the phosphoric acid in a material containing 36 per cent phosphate of lime 

 were made soluble, the percentage of water-soluble phosphoric acid so produced would 

 be 16.99 per cent. It seems evident, therefore, that the manufacturers statement on 

 the label is to be construed as meaning that the superphosphate contains water-soluble 

 phosphoric acid equivalent to 36 per cent bone or rock phosphate. 



Wood Ashes. 



Laboratory No. 13175. — J. McC, Valcartier, Que. Purchased in the vicinity and 

 forwarded for examination as to fertilizing value. Received in air-dried condition. 



Analysis. 



Moisture 1.04 



Mineral matter insoluble in acid (sand, clay, etc.) 41.43 



Organic and volatile matter (charcoal, etc.) 17-80 



Oxide of iron and alumina 20.96 



Lime 10.14 



Magnesia .77 



Potash 2-76 



Soda 1.08 



Phosphoric acid 110 



Carbonic acid, etc. (undetermined) 2.92 



10000 



