CONTENTS. XV 



PAGE 



Hibernation, 887 



Spontaneous Combustion, . . . . . . . . 888 



Evolution of Light, 889 



" Electricity, . 892 



STATICS AND DYNAMICS OF THE HUMAN BODY, .... 895 



Statics of the Human Body, . 895 



Specific Gravity of the Body, 895 



Height of the Body, 896 



Weight of the Body, 896 



Daily quantity of Food and its Composition, . . . . 898 

 Relations between the Constituents of the Body and the daily 

 Food, . . . . . . . . . . .899 



Destination of the Food in the living Economy, . . . 900 



Effects of Deprivation of Food, 908 



Dynamics of the Human Body, ...... . . . * . . 910 



Measure of Heat, or Heat Unit, . . * . . . 914 



Mechanical Coefficient, and Mechanical Equivalent of Heat, . 914 



Quantities of Heat developed by Combustion, ... . 915 



Calorific Work of the Body, .. . . >> .... . 916 



Daily Heat compared with the Quantity of Carbon and Hydro- 

 gen oxidized, . . ... . .'".'. 916 



Mechanical Work of the Body, . , . . . .917 



Relations of the Kinds of Food to the Modes of Work, . . 918 



Value of Food as a source of Motor Power, . .. . . 929 



Transformation of Mechanical into Calorific Work in the Body, 929 



Nutritive or Assimilative Work, .. . . ' > . 930 



Electric Work, .' . ,.-, Y '..-.' ... . 931 



Nervous Force and Work, . . . . . ... 931 



REPRODUCTION, . ^ . ... .^ . . . ?' 933 



Spontaneous Generation, ., .... . . .... 933 



The various Modes of Reproduction, . . . . , . . 934 



The Ovum generally, . - . ... . . . 941 



The Ovaries and Ova of Birds, . ; ; ..- .' . . . . 943 



The Mammalian Ovaries and Ova, . . . . . . . 946 



The Ovaries and Ova of other Animals, .. . . . . 948 



Fertilization of the Ovum, .'.;'.... \> . . 949 



