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RESPIRATION CALORIMETER AND EXPERIMENTS. 22 
_ As fresh milk is generally more palatable than that which has 
been preserved, portions are obtained each day from a milk- 
man who supplies the milk from a mixed herd. ‘The compo- 
sition is very nearly uniform, though determinations of fat, 
nitrogen and total solids are made in each sample. Of the 
other materials a‘ single analysis, generally in triplicate, 
suffices. The determinations made are, in general, water, 
carbon, hydrogen, nitrogen, ether extract, ash and heat of 
combustion. 
Composttion of food materials, etc.—The results of the analy- 
ses of the food materials and feces are given in’ table 51 here- 
with. 
TABLE 51. 
Composition of food materials, etc. 























3 | q 
s Zl og é r | ae 
S He Oo eee eae ne bso a8) . |23é 
5S Foop MatTErIALs, ETc. £ } = £ a | 3x S = & 2 $25 
i Be eet ame dato) e |: hie Bie aaa 
ical i) 
a 3 % % % % % bo Pe Calk 
2789] Beef, fried, - - |6/4.77/19.28| 3.03/60.3/29.8| 8.7; — |2.09|2.421 
2835| Beef, - - 49 14. TO|26; 35), 2.25167. 3125 .6 Sid dess I.56|1.928 
2788) Ham, deviled, - | 6|2.64)36.11| 4.91/42.2,16.5/36.91-— |4.0314.353 
2790| Eggs, - 8 - | 6 }2.24/14.39) 2.19)73.2/14.0111.3| — | .98|1.928 
2793) Butter, - .: - - | 6] .16/62.82/10.34) 9.3} 1.0/87.3} — |2.39/7.954 
2833] Butter, - - |9| .19/62.24) 9.89/10.2) 1.2/84.8] — |3.80|/7.761 
2799| Milk, - : e PO) 43/08. 27 el. 22)05.3|, 350) 5. 4 50) OIE Gas 
23-30) Milk,. ;- - = A-O-< 252163785), 60190.7) 3. 3h) = Le 2) 2 78) BOs 
2803) Bread, white, - | 6/1.33/25.45| 3.85/43.9| 8.3} 1.6] 45.0,1.24/2.540 
2834| Bread, = - |9/1.34/23.15| 3.45144.7| 8.4} .2! 44.3)2.44/2.400 
2830| Br’kfast food, wheat! 9 |1.58:40.46) 5.75} 7.5] 9.9! 1.6 77.71/3.26|4.071 
2791| Beans, baked, SOLE IST 85 hel 78 7lg) v7 o2bo oA 19.2|1.86)1.222 
2831| Br'kfast food, maize 9 |1.78)43.86) 6.72] 5.6\11.1] 8.7| 71.1\3.46/4.444 
2792| Peas, canned, SOs, Os ey OF Te EOrOL. Ala 3s; 2 17.9 24| .759 
2786 eur. - =) (O14 2) 10) 6548) 9— 19a S41 T OOO =n ages 
2832) Sugar, - = - |9| — 42.10) 6.48 — 100.0) 3.960 
2829) Ginger snaps, =sitl8 .96/40.21| 5.49 6.0) 9.5] 75.63 LBS 
2808] Feces, - = - |6 1.29 10.64 ¥,56\78:.01, 3, 1h-4. Tee S20) 3 OF Tod 
2838) Feces, - - - |9/1.19/12.13) 1.72/72.9] 7.4) 3.9] I1.4'4.40/1.343 

* As determined. 
Measurement and analysts of excretory products.—The meth- 
ods of treating these products are essentially the same as in 
the previous experiments already referred to. ‘The separation 
of feces was made by use of charcoal, and the analyses and heats 
of combustion by the same method employed for food materials, 
The urine is collected for each six hours and its specific gravity, 
