ry remarks regardiug the standpoint assumed in the planning and 

 the management of the work under discussion. In the published 

 detailed record of the second feeding experiment (see III annual re- 

 port), it may be noticed that the character of the daily diet was 

 changed from time to time by adding a lai-ger proportion of corn 

 meal to a given amount of skim-milk or buttermilk. The quantity of 

 feed offered daily to the animals on trial was controlled by their in- 

 dividual appetite, — beginning with eight and twelv-e ounces of meal 

 to four quarts of milk, — and closing with a daily ration, consisting 

 in case of one lot of animals of 91 ounces of corn meal and twelve 

 quarts of buttermilk jter head, and in case of the other of 108 

 ounces of corn meal to seven quarts of skim-milk. The changes re- 

 <y:\n\'\ng {he quantity of the daily supply of feed were for obvious 

 rcasous 'gradual and depending on the appetite of each animal. The 

 alterations regarding the character of the daily feed, — i. e., the 

 changes in the relative proportion of meal and of milk, — were made 

 with reference to the stage of growth of the animals on trial. The 

 proportions between meal and milk were changed from four to five 

 times. These changes consisted in a pei-iodical increase of meal for 

 a given amoinit of milk ; they were made for the purpose of in- 

 creasing th(! amount of the non-nitrogenous fodder constituent in the 

 daily dic!t during the later stages of growth. This course of prepar- 

 ing the daily feed vyas adopted to secure, whenever desired, a definite 

 change in the relative proportion of its digestible nitrogenous and 

 non-nitrogenous food constituents. As both kinds of milk used in 

 the experiment contained the nitrogenous food constituents in a much 

 lai-ger relative proportion (1 : 1.8, — 1 : 1.9) than the corn meal 

 fed (1 :8.7()), an increase in the quantity of the latter rendered 

 it possible tb regulate within certain limits the character (nutritive 

 ratio) of the daily diet with reference to a desired proportion of both 

 groups of essential food constituents. The experiment (II) began 

 with a daily diet, consisting of skim-milk and corn meal, which con- 

 tained one 2mrt of digestible nitrogenous food constituents to 2.7 

 parts of digestible non-nitrogenous food constituents ; this propor- 

 tion was subsequently altered ))y an increase in corn meal to 1 : 3.1, 

 later on to 1 : 3.9, and closed with 1 : 5. The animals which 



served in this particular case, varied in live weight from 17 to 19 

 pounds at the beginning of the experiment. The first stated ration 

 was fed until the animals had reached a weight of from 45 to 50 

 pounds; the second until they had reached from 90 to 100 pounds, 

 the third until 135 to 145 pounds, and the fourth subsequently to the 

 end of the trial. The final summing up of the results of that experi- 

 ment showed, when inchiding the entire number of pigs on trial 

 (twelv(i), tliat 3.39 i)()unds of dry matter contained in the 

 feed consumed had yielded one pound of dressed pork. In two 

 instances (of the buttermilk diet) from 3.47 to 3.48 pounds 

 of dry matter of the feed had been consumed for one pound of 

 dressed pork obtained ; whilst in two other instances (of the skim-milk 



