Circular No. 25. (Revision of No. i) 



October, 1909. 



MASSACHUSETTS AGRICULTURAL EXPERIMENT STATION. 



AMHERST. 



COTTONSEED MEAL. 

 By J. B. LiNDSEY. 



The seed of the cotton plant as it conies from the 



Method of gin which removes the cotton fibre is still covered 



Manufacture, with a coat of white down, technically known as 



" linters." The " linters " being removed, the seed 



itself appears black in color, and irregular egg shape in form. The 



thick, hard, black seed coat or hull is filled with the coiled embryo 



(meat) which contains a large number of oil cells. Machines have 



a 





cotton 



Th 



culture, 1S95 



been invented to remove the hull and the residue or meat is cooked 

 in large iron kettles, and while still hot is wrapped in hair cloth and 

 subjected to a pressure of 3000 to 4000 pounds to the inch to 

 remove as much of the oil as possible. The pressed cottonseed 

 cake when ground results in the bright yellow cottonseed meal of 

 commerce. A ton of seed furnishes about 1,000 pounds of hulls, 

 300 pounds of extracted oil and 700 pounds of meal.' 



'The Cottonseed Industry by C. M. Dougherty in Year Book of U.S. Dept. of Agri- 

 culture 1901, pp. 2S4-298. 



