42 



in the former case, according to live-weight. Particulars 

 relating to the two lots will be found in Table X. 



Instead of dividing the cows into two lots of five accord- 

 ing to their average live-weight as in the first series of ex- 

 periments, the lots were arranged this time as far as possible 

 according to the yield and quality of the milk. It will be 

 seen from the figures above that it would have been difficult 

 to get two lots to agree more closely in yield of milk and per- 

 centage of butter-fat than these did at the commencement of 

 the experiment. The live-weight varied considerably. 



The two lots were put on their respective rations on 

 November 1, when Experiment C commenced. At that time 

 the two lots stood as follows : 



Lot I. ... 

 Lot. II... 



Average yield of milk 

 per cow per day. 



27'4 pints 

 27 '6 pints 



Per cent, of 

 butter-fat. 



3-32 

 3-23 



Average 

 live-weight. 



],1341b. 

 1,1 95-6 Ib. 



Rations. In the first series of experiments, as already 

 shown, the two lots of cows were supplied with 8 Ib. and 12 Ib. 

 of concentrated food respectively during the first three months 

 (Experiment A), the bulky food being the same in both cases. 

 For the second three months (Experiment B) the rations were 

 reversed. The same plan was again adopted, but as the cows 

 were considerably heavier than those used in Experiments A 

 and B, it was considered necessary to give them heavier daily 

 rations, which were accordingly calculated for 1,200 Ib. live- 

 weight. The rations per 1,000 Ib. live-weight were as 

 follows : 



LOT I. 



8 Ib. con- I 4 Ib. maize meal. 

 centrated-l 2 Bombay cotton cake. 

 food ^2 linseed cake. 



6 chopped straw. 



12 hay. 



50 roots. 



Albuminoid ratio, 1 : 6. 



LOT II. 



I2lb.con- fQ Ib. maize meal. 

 centrated -| 3 , , Bombay cotton cake. 



food 



13 



6 



12 



50 



linseed cake, 

 chopped straw, 

 hay. 

 roots. 



Albuminoid ratio, 1 : 5'7. 



