10 



ARON. 



It is worth mentioning that number IV, receiving about 10 per cent 

 less in calories than number I, very soon dropped somevphat behind the 

 latter in weight. 



Experiment I. — Dogs I to IV. 



'Day 



Wsijhl 

 4SO0 

 4400 

 4300 

 4200 

 4 I 00 



4000 



3900 

 3S00 

 3700 

 3900 

 3500 

 3400 

 3300 

 3 200 

 3 1 00 

 3000 

 2 900 

 2600 

 2700 

 2600 

 2500 



2 4 00 



2300 



azoo 



2 100 

 2000 



1 900 

 I 800 

 1700 

 1600 

 IBOO 

 1400 

 1 300 

 1 20O 



t 6 11 16 2t 2B 31 M 41 M SI SG 61 60 71 70 Bl 









r 





r 









t 



4 



L- 



J_ 



/ 



1 



_l 



Lii^\\t- 



-iJ 



i^ 



T 



t 



_lt 



ii 





t 





i- n 



I -s ^St 



-i ^^^^^w 



/ 4-PHn ^ 



f 



tL'-. 



4^^-.^ 



's^ V 









Chart 1. — Variations in weiglits o£ dogs I to IV of Experiment I. 



Dogs II and III, which received practically the same amount of 

 calories, increased but slightly in weight during the first forty days 

 (from about 1,400 to 1,900 grams). The constancy in weight desired 

 was reached between the fortieth and fiftieth day. 



During the period of the experiment the appearance of the four animals 

 changed considerably. While numbers I and IV were apparently well 

 nourished and well proportioned, numbers II and III, although increasing 

 in weight, began to appear emaciated. Their legs seemed to be unusually 

 long and slender, while their heads appeared to be a trifle large in 

 proportion to their bodies. I took a few measurements, which may 

 illustrate this condition. 



