402 FUNDAMENTALS OF AGRICULTURE. 



a great deal depending upon the season, the nature of 

 the land it was raised on, and the climatic conditions. 



Cotton Seed Nitrogen 



Meal from Protein Fat Free Ext. Fiber Water Ash 



Highland 45-46% 8.63% 24.24% 7-25% 8.52% 5.90% 



Lowland 41.63 7.22 26.64 9-68 8.60 6.23 



Linseed Meal and Flax Feeds. These materials 

 are common in certain sections of the Middle West. 

 They are derived from the flax plant which is grown 

 for "its valuable fiber, i. Linseed meal. There are 

 two classes of linseed meal found on the American 

 market, namely, old process and new process meal. 

 The old process meal is obtained by pressing out the 

 oil from the cold or warmed crushed flax seeds. The 

 new process consists of extracting the oil from the 

 warmed crushed flax seeds by the use of naphtha. This 

 new process is employed because it permits of a greater 

 extraction of oil. The naphtha is driven off by steam 

 before the product is placed upon the market. 



ANALYSES OF OLD AND NEW PROCESS LINSEED 

 MEAL AND FLAX SEED * 



Nitrogen 



Protein Fat Free Ext. Fiber Water Ash 



Old process meal... 32.9% 7-9% 35-4% 8.9% 9.2% 5.7% 



New process meal. . 33.2 3.0 38.4 9.5 10.1 5.8 



Flax seed 22.6 33.7 23.2 7.1 9.2 4.3 



Flax Feed. This by-product is composed of the 

 screenings from the flax seed as well as part of the 

 shell and fiber of the flax. It is used to some extent 

 in mixed feeds. 



Alcoholic By-products. Brewers' grains, malt 

 sprouts and distillers' grains are examples of these by- 

 products. They are rich in nitrogenous substances 

 containing about l / 2 to Y^ as much protein as good 

 cotton-seed meal. i. Dried brewers' grains. These 

 are the kiln-dried by-product from the manufacture 

 of beer. They consist principally of barley grains 



* Henry, " Feeds and Feeding." 



