INCREASE 



189 



manner similar to that indicated above, the composition of the 

 fattening increase. The data obtained in these classic researches 

 are still regarded as the most reliable fundamental basis in all 

 investigations of this kind. They are given in the table below. 



CHEMICAL COMPOSITION OF THE BODIES OF FARM ANIMALS 

 *PER CENT. OF THE FASTED LlVE WEIGHT. 1 



ESTIMATED COMPOSITION OF THE FATTENING INCREASE PER CENT. 



The two pigs actually analysed were from the same litter, 

 and appeared to be very much alike in all respects. As it 

 was impossible to ensure the same degree of correspondence 

 in regard to sheep and oxen, it was considered advisable, in 

 estimating the composition of the increase, to take the average 

 weights of a large number of typical animals in the store and 

 fat conditions, instead of the weights of the animals actually 

 analysed. The analytical results seem to justify the assump- 

 tion that they fairly represent the composition of the bodies 

 of the animals in their respective conditions, and, therefore, 



1 " Rothamsted Memoirs," vol. iii. p. 537. 



