CONTENTS. 



Unity of Origin; Agassiz, Vogt, Giebel, and De Candolle, on 

 Species in Animals ; American School ; Fecundity as a criterion 

 of Species, Buffon ; Hybridity as a criterion of Species, F. Miil- 

 ler; Desmoulins on Hybridity among Cattle; Fecundity of Hy- 

 brids; Nott and Gliddon on definition of Species; "Race" as 

 applied to Mankind and Dogs; Inferences from the foregoing; 

 Eeversion ; Cases of Mongrels, Mestizoes, Mulattoes, etc.; Opinion 

 of Geoffrey St. Hilaire ; Blumenbach on Eeversion ; Geographical 

 distribution of Species ; Eange of Variation ; Species and Eace ; 

 Application of these terms to domestic animals, Nott ; Applica- 

 tion to Mankind ; Variations peculiar to each Species ; Agassiz's 

 application to Man and Ape; other Writers referred toi Eetro- 

 spect ......... 17 



SECTION I. 



ON THE MOD!-: AND MAGNITUDE OF THE PHYSICAL CHANGES 

 TO WHICH MAN IS SUBJECT. 



1. Climate. Influences of Climate stated; Correspondence of Climate 



with physical organization; Effects of the hygrometric state of 

 Atmosphere ; Effects of the barometric state ; Mailer's explana- 

 tion of black skin of Negro; Berthold's explanation; Foissac's 

 explanation ; Godron on climatic influences ; Heusinger's observa- 

 tions ; Facts by D'Orbigny ; Volney on Negro physiognomy ; 

 Blumenbach's views ; Influence of Climate on stature ; Views of 

 Lauvergne, Zimmerman, Geoffrey St. Hilaire ; Influence of Climate 

 on the sexual organs ; pn the intellect ; on fecundity ; on colour 

 of skin, hair, and eyes; Influence of geographical conditions on 

 the human frame ; Different Eaces compared ; Pruner-Bey on 

 climatic influence ; Complexion in different Climates ; Effects of 

 American Climate on German, English, etc. ; the genuine Yankee ; 

 Australian Climate ; Influence on Character . . .34 



2. Aliment. Effects on Body and Mind undoubted; Influence of 



Wealth and Poverty; Degenerate Irishmen of Ulster ; the Bosjes- 

 mans ; Eice-consuming peoples ; Flesh-Eaters ; the Fiji Islanders 

 and other Vegetarians ; American tribes and their various dietary; 

 the Yakuts ; the Arabs, Bedouins, etc. ; Milne-Edwards on Nutri- 

 tion; French military standard; Effects of mode of life on the 

 skeleton; Hunters and Fishers; Malay, Japanese, and Chinese 

 women, effects on them of sedentary or active habits ; Social rela- 

 tions and castes, how they act on the Body ; Change of habit and 

 its effect on the Portuguese settler ; the Barabra, Kordofanese, etc. 57 



3. Mental Culture. Mental influence favourable or unfavourable to the 



physical development ; Low development subject to external influ- 



