1904.] PUBLIC DOCUMENT — No. 33. 153 



fat in tho ration is a matter of niiuh importance. 1 believe, 

 further, that care should he taken that the ration docs not 

 include too large a })roportion of fiber, as this without doubt 

 increases the labor of digestion, and probably decreases the 

 proportion of the various nutrients digested and assimilated. 

 It is well understood that animal matter of some kind is 

 essential to good vgg production. Our earlier experiments 

 have shown the great superiority of animal to vegetable pro- 

 tein in rations for laying hens. It is believed, however, that 

 suitable animal feeds, under which class may be included all 

 such as are well preserved and sweet and palatable, may be 

 wisely used in connection with a large proportion of our 

 cheapest grain, — corn. 



