DIVEKSE COMPONENTS 



325 



(fig. 157) is proportional to the amount still to be eaten. The 

 diminishing rate also corresponds to a weight deficit that diminishes 

 exponentially with time. Rather similar data exist for cats that 

 lapped up their food (Bousfield, '33). 



The maximal loads possible in privation of food vary with 

 initial states of the individual, rates of depletion, and other factors. 

 Deficits of body weight that are barely tolerated probably do not 

 differ significantly among the mammalian species that have been 



Days 



Fig. 155. Increment of body weight (% of Bo), and relative rates of intake, in 

 relation to time after (A) total privation for 48 hours, (B) forced intake by stomach. 

 Eats were allowed unlimited food (dried milk) and water except during the 48 hours. 

 Amounts forced are indicated in block at lower right. Seven tests on 7 individuals (A) 

 and five tests on 5 individuals (B). New data. In A the rats consumed no more food 

 or water per day after deprivation than before deprivation; the dogs (fig. 154) did. 



studied. Extreme loads are : dog, - 63% of Bo (Howe et al, 12) ; 

 cat, -54 (Sedlmair, 1899) ; rabbit, -49 (Rubner, 1881) ; and man, 

 -45 (Luciani, 1890). 



Immature rats appear to withstand prolonged partial feeding 

 that limits their weight. Subsequent recovery, if allowed at early 

 ages, occurs with faster net gain in weight, yet with slower intake 

 of food, than in control individuals (Jackson, '37). 



