List of Illustrations in Text 



FIG. 



PAGE 



28. Butterfly emerging from chrysalis 13 



29. Head of milkweed butterfly, showing parts .... 14 



30. Cross-section of sucking-tube of butterfly .... 15 



31. Longitudinal section of the head of the milkweed 



butterfly 15 



)2. Interior structure of head of milkweed butterfly . . . 16 



33. Labial palpus of butterfly 16 



34. Legs of butterfly . . ■ 17 



35. Parts of leg of butterfly 17 



36. Scales on wing of butterfly 18 



37. Androconia from wing of butterfly 18 



38. Outline of wing of butterfly 20 



39. Arrangement of scales on the wing of a butterfly . . 20 



40. Figure of wing, showing names of veins . . . . 21 



41. Internal anatomy of caterpillar of milkweed butterfly . 22 



42. Internal anatomy of milkweed butterfly 23 



43. Plan for folding net-ring 27 



44. Insect-net 27 



45. Plan for making a cheap net 27 



46. Cyanide-jar 29 



47. Paper cover for cyanide 29 



48. Method of pinching a butterfly 30 



49. Cheap form of breeding-cage 35 



50. Breeding-cage 36 



51. Butterfly in envelope 38 



52. Method of making envelopes 38 



53. Setting-board ... 39 



54. Setting-block 39 



55. Butterfly on setting-block 39 



56. Setting-needle 40 



57. Setting-board with moth upon it 40 



58. Butterfly pinned on setting-board 41 



59. Drying-box 41 



60. Drying-box 42 



61. Apparatus for inflating larvae 45 



62. Tip of inflating-tube 46 



63. Drying-oven 46 



64. Drying-oven 47 



65. Detail drawing of book-box 48 



66. Detail drawing of box 48 



xiv 



