18 



HATCH EXPERIMENT STATION. 



[Jan. 



Experiment III. 



[New-process linseed meal (Cleveland flax ineal) v. flaxseed meal.] 



The next experiment was begun in October, 1898, and 

 continued until Feljruaiy, 1899. Tlie cows, ten in number, 

 were divided as evenly as possible into Herds I. and II. 

 Both herds received rowen (second cut hay) as the coarse 

 fodder during the entire experiment. The grain ration for 

 each herd consisted of bran, new-process linseed meal* 

 (Cleveland flax meal, so called) and corn meal during the 

 first period of three weeks, one week of which was prelim- 

 inary. This was designated the "normal oil" ration. In 

 the second period of twelve weeks Herd II. received flaxseed 

 meal in place of the Cleveland flax meal, and corn meal ; and 

 the entire ration of Herd I. was continued unchanged. The 

 ration consumed by Herd II. in the second period was des- 

 ignated the "excess oil "ration. The third period proper 

 lasted two weeks, and both herds were fed the same ration 

 as in the first period. Herd I. then received the same 

 (normal oil) ration throughout the entire experiment and 

 Herd H. the excess oil ration in the second period. The 

 normal oil ration consisted of about .5 pounds of digestible 

 oil and the excess oil ration of 1.75 pounds. The amount 

 of protein and carbohydrates were essentially the same, the 

 oil being the varying factor. 



Daily Ration (Pounds). 

 First period : both herds normal oil ration. 



Second period: Herd I., normal oil ration; Herd II., excess oil ration. 



Tliird period : both herds normal oil ration. 



* This meal contained less than 3 per cent, of oil. 



