65 



DISCUSSION OF THE DATA. 



Tables 1 to 6, inclusive, contain the original analytical data from 

 which the subsequent data showing the details of the composition of 

 the meat were computed. The character of the data in these tables is 

 pretty fully explained in a previous part of this report. These tables 

 are particularly valuable, because they are the records of the data as 

 made at the time the observations were made, and therefore show the 

 extent and nature of the analytical work more elaborately than would 

 be indicated by the details of tabular data shown in subsequent tables, 

 which were obtained from a careful analytical study of Tables 1 to G. 

 It is believed that with the explanation previously given the student 

 will be able to understand thoroughly the nature of the tables men- 

 tioned. 



In Table 7 are found the general data in parts by weight for all the 

 different parts and cuts of each animal. The footings show the total 

 weight, in grams, of each constituent of each animal, and the second 

 horizontal column of footings shows the percentage by weight of each 

 constituent for each animal. The data in Table 7 are calculated from 

 the original data contained in Tables 1 to 6, inclusive. The captions 

 of Table 7 will explain sufficiently the nature of the data. 



COMPOSITION OF THE SAME CUTS FROM THE DIFFERENT ANIMALS. 



Tables 8 A to 8 K. inclusive, contain a comparison of the composition 

 of the meat of the same cuts of each animal. Each table in the cap- 

 tion designates the character of the cut of meat on which the com- 

 parison is made. For instance 



Clear backs. Table 8 A is a comparison of the composition of the 

 meat of the American clear backs of all the animals. A study of the 

 data reveals quite a variation in the composition of the meat from 

 the different animals, and this variation is found in all the series of 

 data. As in the other cases, we find that there is a corresponding rela- 

 tionship between the water and fat, one varying inversely as the other, 

 so that the sum of the two is almost a constant quantity. The extremes 

 of variation in water are found in the Berkshire and Duroc Jersey, 

 namely, 32.27 and 20.23 per cent, respectively. The extremes of fat 

 are also found in the same animals, namely, 57.69 and 73.95, respect- 

 ively. In nitrogenous substances, as would naturally be expected, 

 there is a corresponding variation, the samples which have the most 

 fat, as a rule, having a lower percentage of nitrogenous bodies, and 

 vice versa. This rule is not of rigid application, but must be regarded 

 only in a general sense. For instance, in Table 8 A the largest per- 

 centage of nitrogenous substance is found in the Berkshire, which also 

 has the smallest percentage of fat, while the smallest percentage of 

 nitrogenous matter is found in the Duroc Jersey, No. 6, which, with 

 one slight exception, has also the largest quantity of fat. The distri- 

 3020 No. 53 5 



