15 MAINE AGRICULTURAL EXPERIMENT STATION. 



COTTON SEED MEAL. 



Pure cotton seed meal is made by grinding the seed after the 

 white down, which remains upon the seed as it comes from the 

 gotton gin, and the hard hulls have been removed. Decorticated 

 cotton seed meal thus prepared carries from forty to fifty-three 

 per cent of protein. From the ease with which hulls may be 

 ground with the cotton seed, this class of goods offers peculiar 

 opportunity to dishonest manufacturers and dealers. When the 

 feeding stuff law went into effect in the fall of 1897 the State 

 was filled with inferior goods carrying from twenty-two to thirty 

 per cent of protein. In the spring of 1898 the inspectors- 

 reported a few lots of these goods. In November, 1898, only two 

 lots of low grade cotton seed meal were found by the inspectors, 

 and these samples were guaranteed in accordance with their low 

 grade. Occasionally the Station has had sent to it by corres- 

 pondents samples of suspected meal, but analyses have shown 

 them to be up to guarantee.* Not all dark colored meal is adul- 

 terated and not all bright yellow meal is free from adulteration. 

 The following statement made in bulletin 44 apparently 

 represents the status of low grade cotton seed meal at present : 

 "Goods of this type were very abundant in this State in 1897 

 but there are almost none of them to be found at present. The 

 inspection law has driven them to other states." 



As will be seen from the analyses the cotton seed meals agree 

 quite closely with the guaranteed analyses. 



GLUTEN MEALS AND FEEDS. 



Gluten meals and gluten feeds are by-products left in the 

 manufacture of starch and glucose from Indian corn. Corn 

 consists largely of starch. The waste product from the manu- 

 facture of starch or sugar is relatively much richer in oil and 

 protein than corn. Many factories are removing part of the 

 corn oil from the waste, so that some gluten meals carry but little 

 oil. This reduction in fat is an advantage, as feeding corn oil 

 to dairy animals seems to have a tendency to make the butter 

 soft. No by-products used for feeding differ more from each 

 other than do these starch and sugar wastes. All manufacturers 



* After this Bulletin was in press one low grade unguaranteed sample has been 

 received. 



