After 135 days on an adequate diet it weighed 222 g. 



The equations for the first and second cycles of growth 

 of this animal are 



and 



log 2'\Q~'^x =-0231 (« — 610). 



For a graphic representation of these values see Fig. 5. 



The constants of the different equations are grouped 

 for convenience in Table II. From them it appears 

 that male rats fed on adequate diet reached a weight 

 of 280 g. at the end of their first year, and the female rats 

 a weight of 230 g. in the same time. The females grow 

 relatively faster in the first cycle than the males and in 

 haniiniiy with tliis property the values of K (the constant 

 of tlie reaction) in the first cycles were greater than 



