INDEX 



Alga, 128. 

 Apple 



blossom, 129. 



branch, 94, 99. 



bud, 95, 100. 



fruit, 131. 



fruit scar, 99. 



fruit spur, 98. 



leaf, 97. 



Oak, 133. 



Swamp, 135. 

 Aster, 47. 



Back swimmer, 125. 

 Bark, 65. 

 Bean, 112. 

 Bee, 46, 131. 

 Birch tree, 47. 

 Bird seeds, 46. 

 Bitter-weed, 46. 

 Blood, 104. 

 Blowfly, 16. 

 Bluebottle fly, 16. 

 Borers, 45, 68. 

 Bud- 



Apple, 95, 100, 131. 



Cabbage, 117. 



Maple, 115. 



Pine, 86. 



Bulb, 106, 117. 

 Burdock, 50. 

 Butterfly, 26. 



Monarch, 28. 



Mourning cloak, 71. 



Swallowtail, 28. 



Violet-tip, 28. 



Cabbage, 117. 

 Caddis worm, 76. 

 Calyx, 129, 131. 

 Carbon, 66. 

 Carpet beetle, 137. 

 Caterpillar, 23. 



Apple, 132. 



Cabbage, 28. 



Clothes moth, 136. 



Golden-rod gall, 48. 



Hop-vine, 28. 



Milkweed, 28. 



Tomato, 29. 



Web worm, 25, 61, 70. 



Woolly bear, 72. 

 Cat-tail, 39. 

 Charcoal, 66. 

 Chickadee, 81. 

 Chipping sparrow, 62. 

 Climbing vines, 114. 

 Cocoon, 26, 54, 69. 

 139 



