20 



COMMERCIAL FEEDING STUFFS. 



COTTONSEED MEALS. 



The average, maximum, and minimum protein and fat content of 

 various samples of cottonseed meal examined, respectively, in Penn- 

 sylvania, New England, and New York are given in the following 

 table: 



TABLE 2. Percentage of protein and fat in cottonseed meals. 



[Compiled.] 



The average percentage composition of cottonseed meals reported 

 by Jenkins and Win ton 6 is as follows : 



Number of analyses , 35 



Moisture 8. 2 



Ash.. : 7.2 



Protein 42. 3 



Crude fiber 5. 6 



Fat '. 13.1 



Nitrogen-free extract 23. (i 



Taken as a whole, the samples of cottonseed meal examined (Table 

 3) have a satisfactory protein content. Although most of the sam- 

 ples do not come up to the average found in Pennsylvania, New 

 York, and New England, they approximate the average reported by 

 Jenkins and Winton. Only two' samples show such a low protein 

 content as to render them liable to suspicion namely, Nos. 1745 and 

 1907. No. 1745 shows a protein content of only about half what it 

 should be. From the large amount of crude fiber and pentosans in 

 the sample, the low fat figure, and the results of the microscopical 

 examination it is evident that an excessive amount of hulls is present 

 in this meal. Sample No. 1907 contains an amount of protein con- 

 siderably below the average. The other figures for this sample, 

 however, are not especially suspicious, and, since another sample of 

 the same goods has an average protein content, it is probable that it 

 is not adulterated in any way. 



The figures for crude fiber are suspiciously large in only four cases 

 namely, Nos. 1552, 1630, 1788, 1745. Since in sample 1552 the deter- 

 minations other than crude fiber compare fairly well with the aver- 

 age, it is probable that this rather high crude fiber has no significance. 



Report of the Pennsylvania State College 1 for 1900-1901, under report of chemist. 

 fcU. 8. Dept. Agr., Office of Experiment Stations, Bui. No. 11, A Compilation of 

 Analyses of American Feeding Stuffs. 



