METHODS OF INVESTIGATION. 
65 
Ox. Sheep. Swine. 
Half Fat,| Fat, Lean, Fat, Lean, Fat, 
Per Cent./Per Cent./Per Cent./Per Cent.|/Per Cent.|Per Cent, 
Watetintoseds esis ovtecs 56.1 48.6 | 61.0 | 46.2 | 58.2 | 42.9 
Dry matter............. 43.9 | 51.4 | 39.0 | 58.8 | 41.8 | 57.1 
100.00} 100.00) 100.00] 100.00] 100.00| 100.00 
In the dry matter : 
Slivsaos0 eiesuse es eine 5.1 4.1 3.4 2.9 2.8 1.7 
Rat sis sisvewswarssad 20.7 | 31.9 19.9 87.9 | 24.6 | 44.0 
Other organic matter 
by difference........ 18.1 15.4 15.7 18.0 14.4 11.4 
43.9 51.4 ; 39.0 | 53.8 | 41.8 57.1 
Total nitrogen.......... 3.0 2.4 2.55; 2.1 2.3 1.9 
Per cent. of nitrogen in 
‘‘other organic matter” | 16.58] 15.59] 16.24] 16.19} 15.97) 16.66 
flesh of cattle, sheep, and swine, after extraction with ether for 
480 hours, computed ash-free, were: 
Carbon........ {uve celeste gaat Raging Hee 52.84 
Hy drogenisie iscsi eet rae cade’ 7.22 
Nitrogen: o.icb we Wise te eter edeae es 16.46 
ORV PON esa a aay oi ang ant eahaae 22.89 
SULPaUT aw res da ume entce ae aes 0.59 
100.00 
Considering the indirect method by which Henneberg’s result 
was reached, the agreement as regards nitrogen, both with Kohler’s 
results and with those of Rubner, Stohmann, and Argutinsky just 
cited, is remarkably close. 
Henneberg assumed the following 
round numbers to represent the average composition of the total 
protein of the body, and his example has been generally followed 
by subsequent investigators: 
Carbon cris dae sieve tac en 53 per cent. 
Hydrogen vc cass ae eve sadeeaodsecaws (in 
Nitrogen sic.:6 5 ivasoew sce nace @ onic ag ote 1“ & 
ORY ROMs ee cewienioaiewe vise a Slee eee tah 23008 
Sulphur...... icatoininavatpyvidtandievs's'e Oy eles Lyte 
