16 



the comparison with the preceding and following periods, it ap- 

 peared to have been, on the whole, slightly retarded from the nor- 

 mal rate of increase. 



CORN STARCH 



was combined with gluten meal in ration (i) in such proportion 

 that the ration was equivalent to the corn-meal ration (b). 



It followed gluten meal (c) with Duchess, 2d, and produced 

 the same effect as corn meal, decreasing the iodine number and 

 causing no variation in the volatile acids. 



THE CONTINUATION OF THE SECOND SERIES 



was carried out with the cows Duchess, Maramee, and Princess 

 Leto, which were used in the second series of Part I. The exper- 

 iment consisted of trials of several oils or fats in rations contain- 

 ing a constant quantity of albuminoids and carbohydrates. The 

 oils used in the series were corn or maize oil, cotton-seed oil, cocoa- 

 nut oil, palm oil, commercial oleo oil, and commercial stearin. 

 Since it was desired to observe especially the effect of corn oil 

 and cotton-seed oil, the ration was compounded with a view to 

 avoiding any of the products of cotton-seed or corn, other than 

 the oils, and for this purpose, clover and vetch hay, oat-meal and 

 middlings, together with ensilage, were used for the preliminary 

 feeding, and the trial rations were made by adding equal quanti- 

 ties of the oils to the preliminary ration. 



THE DIFFERENT RATIONS 



and the results of the trials are given in the succeeding tables : 



