24

_The Yellow-billed Cuckoo_ 26

_Browsing Kine_ 29

_A Greedy Foster-child_ 34

_The Yellow Warbler_ 44

_A Blighted Home_ 46

_The Normal Nest of the Yellow Warbler_ 47

_The Yellow Warbler at Home_ 49

_A Suspicious Nest of the Yellow Warbler_ 50

_The Nest Separated_ 52

_Initial_ 57

_The Door-step Arena, with its Pitfalls_ 60

_Fishing for Tigers_ 65

_Tiger-beetle_ 68

_The Spider Victim_ 70

_Filling the Spider's Grave_ 71

_Black Digger-wasp_ 73

_Black Digger-wasp and His Victim, Showing the Egg of the
Wasp Attached_ 75

_Protecting the Burrow while Searching for Prey_ 79

_The "Cow-spit" Mystery Disclosed_ 81

_The Tiger's Head, from the Victim's Stand-point_ 84

_Initial. Branch of the Bittersweet_ 87

_A Bittersweet Covey_ 90

_Flushing the Game_ 92

_Specimen Twig_ 94

_Building Froth-tent_ 100

_Butterflies and Flowers_ 105

_A Row of Stamens_ 106

_The Parts of a Flower_ 109

_Historical Series, Showing the Progress of Discovery of
Flower Fertilization_ 110

_The Garden Sage_ 120

_Cross-fertilization of the Sage_ 121

_Elastic Stamens. Anthers Inserted in their Pockets_