212 



INDEX 



Appendicitis, H. B., 98. 

 Apple, 



fruit, P. B., Figs. 37, 38. 



leaves, P. B., Fig. 19. 

 Archegonia, 



of fern, P. B., 163, Fig. 83, F. 



of moss, P. B., 164, Fig. 84. 

 Arm, skeleton of, A. B., Fig. 48; 



H. B., 146, Fig. 44. 

 Army sanitation, H. B., 38. 

 Arsenate of lead, A. B., 19, 61. 

 Arteries, 



of fish, A. B., 131. 



of frog, A. B., 111. 



of man, H. B., 109, 112, Fig. 35. 

 Artificial crossing of related species, 



P. B., 120. 

 Artificial propagation of fish, A. B., 



140, Fig. 105. 



Artificial respiration, H. B., 136. 

 Artificial selection, P. B., 119. 

 Asexual generation, 



of fern, P. B., 163. 



of moss, P. B., 166. 

 Asparagus, P. B., 127. 

 Assimilation, P. B., 31; H. B., 6. 

 Astigmatism, H. B., 164. 

 Athletics and tobacco, H. B., 77. 

 Auricle, 



of fish, A. B., 132, Fig. 100. 



of frog, A. B., 111. 



of man, H. B., 110, Fig. 33. 



Bacillus form of bacteria, P. B., Fig. 



71, B, C, D; H. B., Fig. 7. 

 Bacillus tuberculosis, H. B., 31, Fig. 



14. 



Bacteria, P. B., 140-145; H. B., 

 10-43. 



as foes of man, H. B., 23-43. 



as friends of man, H. B., 20-22. 



definition, H. B., 11, Fig. 7. 



occurrence, H. B., 14-20. 

 Bamboo, P. B., 49, Fig. 18. 

 Barbs of feather, A. B., 68, Fig. 50. 

 Bark, P. B., 45. 

 Bast, P. B., 46. 

 Bathing, H. B., 141. 

 Bean fruit, P. B., 89. 



Bean seed, P. B., 97-100. 

 Bedbug, A. B., 60, Fig. 45. 

 Beekeeping, history of, A. B., 33. 

 Bees, A. B., 31-43; P. B., Figs. 30, 



31. 



Beggar's ticks, P. B., 93. 

 Benzine as used in testing for fat, 



P. B., 20. 

 Beverages, P. B., 128-130; H. B., 



65-75. 



Bicuspid teeth, H. B., 86. 

 Bidens, P. B., 93. 

 Biennial, P. B., 158. 

 Bile, H. B., 101. 

 Bile duct, H. B., 101, 

 Bill of birds, A. B., 64. 

 Biologists, lives of, H. B., 168. 

 Biology, definition of, P. B., 4. 

 Bird houses, A. B., 99, Fig. 77. 

 Birds, A. B., 62-100. 

 Bivalve, A. B., 181. 

 Black-leaf-40, A. B., 61. 

 Blade of leaf, P. B., 55. 

 Blood, 



of frog, A. B., 110. 



of fish, A. B., 131. 



of man, H. B., 7, 107. 

 Blood corpuscles, 



of frog, A. B., 111. 



of man, H. B., 7, Fig. 5. 

 Blood flow, stopping of, H. B. f 120. 

 Blood plasma, 



composition of, H. B., 107. 



of frog, A. B., 111. 



of man, H. B., 7. 

 Bobolink, A. B., 79, 90, Fig. 67. 

 Bobwhite, A. B., Fig. 62. 

 Body, cell, P. B., 28, 29. 

 Boiling, 



meats, H. B., 54. 



vegetables, H. B., 55. 

 Books, list suggested for reference, 



H. B., 207-209. 

 Botany, definition of, P. B., 4. 

 Bottle, poison, A. B., 1, Fig. 2. 

 Boxes for insects, A. B., 3, Figs. 4, 5. 

 Boys, 



as destroyers of birds, A. B., 92. 



as protectors of birds, A. B., 98. 



