59 



of the action of humic acid in neutralizing the potash and thus 

 setting up "the essential chemical change," but because of the 

 absorptive properties of the peat in retaining the alkaline salts 

 in the manure, and the action of the tannic acid contained in 

 many varieties of peat. 



While molasses mixed with moss or peat (of which Molassine 

 Meal is a type) renders the former easily handled, and while such 

 a mixture may be used to advantage in some cases, it is believed 

 that at prevailing prices it is a decidedly expensive feed stuff. 



III. Poultry Feeds. 



The meat scraps found on the market 



Animal varied widely in price without particular 



Products. reference to their quality or chemical com- 



Pages 40-41. position. The purchaser should note the 



guarantee and also satisfy himself that the 



article is clean and reasonably free from taint before buying. 



Meat scraps are purchased for the protein or meat they will 



furnish and for this reason preference should be given to those 



scraps that carry a high protein content and are free from an 



excessive amount of bone. 



The Rarva Meat Meal, which is a by-product of meat extract, 

 is worthy of particular mention. 



Meat-and-bone meal and bone meal, particularly the cracked, 

 unrendered bone, are preferred by some feeders to meat scraps. 

 While they do not furnish as much meat or protein, they contain 

 mineral matter, phosphates, etc., that are of value for growing 

 fowls. As sources of protein alone, they cannot be considered 

 as economical as meat scraps. 



Blood meal which has been especially prepared for the purpose 

 is occasionally offered as a poultry feed. There is no reason 

 why it should not prove a satisfactory source of animal food 

 when used in limited amounts in poultry mashes. 



Fish meal, which may be the waste from the manufacture of 

 fish glue, the trimmings from the preparation of cured fish for 

 market, or the so-called fish pomace (derived from the menhaden 

 after the extraction of the oil), is quite extensively used as a 

 poultry food. Such material should be substantially free from 

 salt, otherwise it is likely to act injuriously on poultry and par- 

 ticularly on young chickens. 



The material known as milk albumen is a by-product in the 

 manufacture of milk sugar. Its name is misleading for, while 



