NUTRITION AND GROWTH: I. 



Dimensions of dogs on the fiftieth day of Experiment I. 



11 



No. 



Entire 

 length. 



Cir- 

 cum- 

 ference 



of 

 chest. 



Length 



of fore 



leg. 



Length 



hind 

 leg. 



Cir- 

 cum- 

 ference 



of 

 head. 



11 



Cm. 

 45.0 

 43.5 



Cm. 

 30.0 



27.5 



Cm. 



25.6 

 24.8 



Cm. 

 31.2 

 30.3 



Cm. 

 20.5 

 20.3 



III 





I ._ 



51.0 

 ■ 52.3 



33.0 

 35.0 



28.0 

 29.0 



33.0 



(?) 



20.6 

 21.0 



IV 





The term "live weight" in this paper is used to designate the weight of the 

 entire animal before death. Those parts of the animal left after removing skin, 

 internal organs, the digestive tract, and blood when it is bled to death, are 

 called the "body." The "body" therefore consists of muscles, skeleton, nervous 

 system, etc. 



Analyses of the four animals used in Experiment I gave the follow- 

 ing results : 



Table 1, Experiment I. — Composition of dogs I to IV. 



Live weight 



Body (muscles, skeleton, etc.) . 



Per cent of live weight. 



Dog number — 



II. III. IV. 



Grams. 

 1,942 

 1, 206 



Per ct. 



62.1 



Grams . 

 1,747 

 1,133 



Per ct. 



64.8 



Grams. 

 2,850 

 1,986 



Per ct. 



69.7 



Grams. 

 4,600 

 3,040 



Per ct. 

 66.1 



Table 2, Expebiment I. — Weight of skin and 07-gans of dogs II to IV. 





Fresh. 



Dry. 



Dog II. 



Dog III. 



Dog IV. 



Dog II. 



Dog III. 



Dog IV. 



Skin . 



Grams. 

 282.6 

 60.30 



Grams. 

 238 

 57.10 



Grams. 

 333 



59.86 



Grams. 

 104 

 10.62 



Grams. 

 89 

 10.67 



Grams. 

 120 

 11.12 



Brain 





Liver 



95.25 

 42.26 

 20.20 

 36.20 



85.55 

 41.20 

 17.83 

 32.40 



140. 07 

 67.25 

 24.39 

 45.37 



22.09 

 7.56 

 3.73 

 6.30 



21. 30 

 7.36 

 4.04 

 6.10 



35.33 



10.79 



5.41 



9.83 



Lungs 



Heart 



Kidneys and spleen 



Internal organs, total 



193. 91 



176. 98 



277. 08 



39.68 



38.83 



61.46 



Per cent of live weight „ 



Per ct. 

 10.00 



Per ct. 



10.10 



Per ct. 

 9.70 



Per i t. 

 2.04 



Per ct. 

 2.22 



Per ct. 

 2.15 



