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usually alluded to as nitrogenous. Oil fat, 

 etc., are merged under the heading of carbon, 

 necessary for fat and warmth. Mineral 

 matter consists of lime, soda, potash, mag- 

 nesia, sulphur, etc. 



Please don't imagine that the simplifying 

 process of this analysis is any reflection on 

 your knowledge and understanding. It is 

 prompted entirely by the hazy condition such 

 reading matter used to leave my poor brain 

 in, when I began seriously to study cause 

 and effect in poultry culture. Experience, 

 however, showed me the common sense of 

 much that, at first, seemed theoretical jumble, 

 because of the involved technical terms; so 

 as I read and digested different authorities, 

 a notebook was compiled for my own use, 

 containing the gist of each article, in the 

 simplest terms possible, to convey the infor- 

 mation. During the last nine years prac- 

 tical tests of the value and benefit to be 

 derived from each individual item have been 

 made. When, as sometimes happened, a 



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