INDEX 117 



Hibernation 81 



Homes 34 



Homoiothermism 



advantages of 94 



origin 90 



Homoiotherms 



ability to ignore environment 1 



responses to temperature changes 30 



Hormones 46, 51, 66 



Hot springs 27 



House wrens 12 



Humidity 22, 60, 97 



I 



Independence of environment 1, 90 



Indoor life 99 



Insulation 2, 33, 53, 67, 86 



L 



Lactation 13 



Land animals 3 



Longevity 69, 76 



M 



Mammals, evolution of 13 



Man 96, 100 



Marsupials 13, 14, 82 



Metabolism 1, 2, 50, 85 



age, effect of 38 



desiccation, effect of 47 



hibernating period 46 



nervous control of 48 



of homoiotherms 37 



of poikilotherms ." 37 



temperature, effect of 39 



Migrations 25, 32 



Moisture 22, 60 



Monotremes 13, 14, 82 



Morphological adjustments 32 



