I. EVOLUTION AND NATURAL SELECTION 



IXTRODUCTIOX 



PAGES 



SPECIES AND THEIR DESCENT — LAMARCK S DOCTRINE REGARDING SPECIES 



FUNCTIONALLY PRODCCED MODIFICATIONS — DARWIn's PROGRESSIVE 



EVOLUTION THROUGH NATURAL LAW — SPECIES, VARIETIES, AND MU- 

 TANTS DESCRIBED NUMERICAL RELATION OF ANIMAL GROUPS 



STRUGGLE FOR EXISTENCE INCREASE IN ORGANIC BEINGS BENE- 

 FICIAL VARIATIONS ARISING FROM COMPLEX AND CHANGING RELATIONS 



OF LIFE NATURAL SELECTION' OR THE SURVIVAL OF THE FITTEST 



DOES NOT IMPLY CONSCIOUS CHOICE ANALOGY TO ARTIFICIAL SELECTION 



INHERITANCE EVOLUTION AND INSTINCT PERFECTED INSTINCT 



IN ANIMALS FORMATION OF NEW SPECIES MUTATION THEORY OF 



DEVRIES whitman's ANALYSIS OF DEVRIEs' THEORY — PERSONAL, 



HISTONAL, AND GERMINAL SELECTION AS DESCRIBED BY WEISMANN — 



QUETELET's law, TRIAL BY ERROR ORTHOGENESIS VARIATION 



UTILITY THE BASIS OF NATURAL SELECTION — PROTECTIVE RESEMBLANCE 

 AND MIMICRY SEXUAL SELECTION — SUMMARY OF NATURAL SELEC- 

 TION 1-24 



II. ADAPTATIONS IN ANIMALS AND PLANTS, WITH 

 EXAMPLES 



ADAPTATION PL.\NT ADAPTATIONS FLOWER AND INSECT ADAPTATIONS 



WHY THE NECTAR GATHERERS ASSEMBLE ON THE BASSWOOD BLOSSOMS 



HOW THE MILKWEED PROFITS BY THE VISITS OF ITS INSECT GUESTS 



THE SELECTED GUESTS OF THE BUTTERFLY WEED BIRD FLOWERS — THE 



LITTLE PEAR-SHAPED HOUSE ON THE WITCH-HAZEL BOUGH — 



THE GUESTS OF THE WILD BERGAMOT THE SEASONAL PROCESSION 



OF THE FLOWERS, INSECTS, AND BIRDS WHAT THE POLYPHEMUS 



MOTH AND CATERPILL.\R SUGGEST 25-64 



