16 



VEGETABLE GARDENING. 



Composition of Commercial Fertilizing flaterials.— (Continued.) 



•■■•Sometimes as high as 5 per cent. 

 INova Scotia plaster contains 94 per cent pure gypsum and 4 per cent 

 carbonate of lime; Onondaga and Cayuga, 65-75 per cent gypsum and 18-28 

 per cent of carbonate of lime. 



Animal Manures. — Manure from the same animals may 

 vary greatly in quality according to the kind of food and 

 the condition and age of the animals from which it comes. 

 Fat animals fed on food rich in nitrogen (grains) produce 

 the best manures. Young growing animals that are fed on 

 poor food, such as straw, swale hay, etc., produce very in- 

 ferior manure. The manure from young growing animals 

 or from milking cows is much inferior to that from fat steers, 

 since, in the case of the young animal, a large amount of 

 nitrogen and phosphoric acid is required to build up the 



