1902.] 



PUBLIC DOCUMENT — No. 33. 



165 



while the total solids remained as high as in the cotton-seed 

 oil period. The solids not fat and the nitrogen showed a 

 noticeable increase. The increase of the nitrogen percent- 

 age apparently explains why the total solids did not show 

 the same relative decrease as did the total fat. The ash 

 remained unaffected. 



Table IV. — Average Analysis of Butter Fat. 



First period : both herds standard ration. 



Second period: Herd I, standard ration; Herd II, cotton-seed meal 



ration. 



10 samples, . 



29.58 



Third period: Herd I, standard ration; Herd II, cotton-seed oil ration. 



12 samples, . 



33.78 



Fourth period: Herd I, standard ration; Herd II, Cleveland flax meal 



ration'. 



8 samples, 



22S.9 



228.4 



28.08 



26.81 



34.04 



33.42 



29.21 



29.87 



It will be seen that, excepting for minor variations, the 

 butter fat produced by Herd I. remained unchanged through- 

 out the several periods. In the cotton-seed meal period the 

 fat produced by Herd II. increased a little in its melting 

 point, but otherwise no particular change is noted. In the 

 cotton-seed oil period the fat in case of Herd H. showed a 

 decrease in its Eeichert Meissl number and a noticeable in- 

 crease in the melting point and iodine number, as compared 

 with previous periods. In the Cleveland flax meal period 

 the butter fat produced by Herd II. became similar in com- 

 position to that produced by Herd I., excepting theReichert 



