I10RTUS GUAMINEUS WOBURNENSIS. 



the former. Viewing the results of this experiment, therefore, 

 merely as a test for proving the comparative degree of nourish- 

 ment contained in these several species of food, and not as a proof 

 of the relative value of the respective breeds of animals, (for 

 which this experiment was made, and fulfilled the intention), we 

 could arrive at no satisfactory conclusion ; because it still remains 

 to be proved, whether another individual of the same breed as 

 the ox, (No. 4), might not have gained a greater proportion of 

 flesh from the same weight of food as was consumed by the 

 latter. 



If the weight of nutritive matter, which the chemical process 

 shews these different species of food to contain, be now compared 

 with the weight of flesh which the different oxen gained from it, 

 the comparison will manifest the superior utility of this new mode 

 of investigating the nutritive qualities of the food of these 

 animals. 



The only point assumed in the foregoing comparisons, is the 

 quality of the hay, or the kinds of grasses that composed it ; of 

 which, in the account of the experiment quoted, no mention is 

 made. Likewise, some linseed cakes are much more nutritive 

 than others; I have found them to vary from 67 to 132 grains, 



