Agalkna, house spider, 7. 



Alypia, grape-vine-moth, 160. 



Andromeda (W. liguslriua), singular 

 greeting to the bee, 126; interior 

 arrangement of flower, 128; re- 

 lease of llie pollen, 129. 



Angrxcum, orcliid of Madagascar, 

 with nectary eleven inches long, 



210- 



Ants» herding the aphides, 166; a 

 model honey-farm, 167. 



•' Ant-holes," 61. 



Aphides, plant-lice, founders of the 

 feast, 165; herded by ants, 167. 



Apocynuni, dogbane, 236. 



Apj'ophora, spume-bearer, 82. 



Arethusa bulbosa, orchid, 175. 



Argiope, field spider, 8. 



Aristolochias, 119. 



Aristotle, 23. 



Arum, wild : — Position of the an- 

 thers, 141 ; progressive stages of 

 change, 142, 



Asclepias cornitia, milkweed, 227. 



Asiliis, "robber-fly," 8. 



Axell, a follower of Darwin, 116, 



Bkf.s: — The dmne of, 5; a counter- 

 part of clin'er ; dependence of 

 clover on, 117; manner of ap- 

 proach, 121 ; black - and - white 

 banded, 126 ; approach to the 

 blue -flag, 131 ; experiment with 

 the bumlilebee, 2og ; his escape 

 from tlie flower, 210; manner of 

 cross-fertilizing, 212; manner of 

 conveying the pollen, 2i8; his dif- 

 ficulties with the milkweed flower, 



233 ; the cumbersome handicap, 



234 ; destroyed by the milkweed, 



235- 



Beetles {Ciiinde'la), tiger, 68. 



Birds : — Swifts, 5 ; robin, 5 ; vireo, 5, 

 45 ; indigo, 5 ; chat, 5, 40 ; oriole, 

 5, 32 ; red - headed chippy ; barn- 

 swallow, 6, 28, 39, 40 ; cuckoo, 23; 

 '* kow - bird " ; cow black - bird ; 

 bunting, 27; song- sparrow, 30, 

 40; Maryland yellow - throat, 28, 

 45; Wilson's thrush ; chewink,32; 

 fly-catcher; bluebird; oven-bird; 

 cat - bird ; phoebe. 40 ; bobolink; 

 "reed-birdj" 53 ; humming, 227, 



