FIG. PAGE
1. Schematic Longitudinal Section of the Human Body 4
2. Human Skeleton 7
3. Skeleton of an Ox 9
4. Bending of the Arm by Contraction of the Biceps Muscle 10
5. Diagram to explain the Action of the Motor and Sensory Nerves 11
6. Diagram of the Course of the Circulation 13
7. Life History of the Small-winged Gall-fly (_Andricus
terminalis_) 15
8. Diagram of a Fish’s Heart 18
9. Diagram of a Mammal’s Heart 20
10. Diagram of a Reptile’s Heart 20
11. Diagram of a Frog’s Heart 21
12. Vertical Section of a Human Grinding Tooth 22
13. Crown of an Ox’s Grinder 22
14. Skull of Domestic Cat 25
15. Pine Marten (_Mustela martes_) 27
16. Skull of Mole 30
17. Common Shrew (_Sorex vulgaris_) 31
18. Skeleton of Bat 34
19. Skull of Squirrel 35
20. Abnormal Tooth in Hare 37
21. Hamster (_Cricetus frumentarius_) 38
22. Long-tailed Field Mouse (_Mus sylvaticus_) 40
23. Upper Back Teeth of Brown Rat 41
24. Upper Back Teeth of Water Vole 41
25. Southern Field Vole (_Arvicola arvalis_) 43
26. Skull of Sheep 44
27. Development of Roebuck Antlers 45
28. Wing of Buzzard 50
29. Section through Bird’s Egg 51
30. Eagle Owl (_Otus maximus_) 52
31. Head and Foot of Falcon 53
32. Golden Eagle (_Aquila chrysaëtus_) 54
33. Barn Owl (_Strix flammea_) 55
34. Cuckoo (_Cuculus canorus_) 56
35. Goatsucker (_Caprimulgus europæus_) 58
36. Head of Rook (_Corvus frugilegus_) 60
37. Head of Bullfinch (_Pyrrhula vulgaris_) 62
38. Nightingale (_Daulias luscinia_) 65
39. Wood Pigeon (_Columba palumbus_) 66
40. Capercailzie (_Tetrao urogallus_) 68
41. Pheasant (_Phasianus colchicus_) 69
42. Woodcock (_Scolopax rusticola_) 70
43. Crested and Little Grebes (_Podiceps cristatus and minor_) 71
44. Grey Goose (_Anser cinereus_) 72
45. Herring Gull (_Larus argentatus_) 74
46. Common Lizard (_Lacerta agilis_) 75
47. Adder (_Pelias berus_) 76
48. Grass Snake (_Tropidonotus natrix_) 77
49. Blindworm (_Anguis fragilis_) 78
50. Great Crested Newt (_Triton cristatus_) 79
51. Common Frog (_Rana temporaria_) 80
52. Natterjack (_Bufo calamita_) 81
53. The Perch (_Perca fluviatilis_) 82
54. Wood-borer (_Sirex_) 83
55. Centipede (_Scolopendra morsitans_) 84
56. Ground Beetle, showing Nervous System 84
57. Disarticulated Grasshopper 85
58. Head and Mouth-parts of a Ground Beetle 87
59. Leg of Ground Beetle 88
60. Stages of Silkworm Moth (_Bombyx mori_) 88
61. Stages of Hornet (_Vespa crabro_) 89
62. Migratory Grasshopper (_Acrydium migratorium_) 90
63. Looper Caterpillar 90
64. False Caterpillar 90
65. Stages of Cockchafer (_Melolontha vulgaris_) 91
66. Larva of a Weevil 92
67. Stages of Aphis-eating Fly (_Syrphus pyrasti_) 92
68. A Ground Beetle (_Carabus auronitens_) 95
69. Corn Ground Beetle (_Zabrus gibbus_) and larva 95
70. A Rove Beetle (_Staphylinus erythropterus_) 96
71. Black Burying Beetle (_Silpha atrata_) and larva 96
72. Antennæ of Cockchafer 99
73. Abdomens of Common and Horse-chestnut Cockchafers 100
74. Skipjack (_Agriotes lineatus_) 102
75. Skipjack about to spring 103
76. Grain-plants sown deep and shallow, to show Wireworm attack 104
77. Bean Beetle (_Bruchus rufimanus_) 106
78. Pea Weevil (_Sitones lineatus_) 107
79. Mouse-tooth Weevil (_Baridius chloris_) and larva 108
80. Turnip Gall Weevil (_Ceutorhynchus sulcicollis_) 109
81. Colorado Beetle (_Chrysomela decemlineata_) 111
82. Stages of Colorado Beetle 112
83. Cloudy Tortoise Beetle (_Cassida nebulosa_) 113
84. Rape Flea Beetle (_Psylliodes chrysocephalus_) 114
85. Stages of Seven-spotted Lady-bird (_Coccinella
septempunctata_) 118
86. Stages of Common Lace Fly (_Chrysopa vulgaris_) 122
87. Head of Honey Bee (_Apis mellifica_) 124
88. Common Wasp (_Vespa vulgaris_) and nest 127
89. Common Sand Wasp (_Ammophila sabulosa_) 129
90. Stages of Yellow-legged Ichneumon Fly (_Microgaster
glomeratus_) 133
91. Turnip Saw-fly (_Athalia spinarum_) and caterpillars 135
92. Head of Butterfly 136
93. Scales from Butterfly’s Wing 136
94. Stages of Peacock Butterfly (_Vanessa io_) 138
95. Stages of Cabbage White (_Pieris brassicæ_) 139
96. Garden White (_Pieris rapæ_), male 141
97. Garden White, female and caterpillar 141
98. Green-veined White (_Pieris napi_) 142
99. Dart or Turnip Moth (_Agrotis segetum_) and caterpillar 143
100. Stages of Cabbage Moth (_Mamestra brassicæ_) 146
101. Grass Moth (_Charæas Graminis_) and caterpillar 150
102. Stages of Silver Y Moth (_Plusia gamma_) 151
103. Hop Snout Moth (_Hypena rostralis_) 153
104. Mother-of-Pearl Moth (_Botys margaritalis_) and larva 155
105. Fawn-coloured Pea Moth (_Grapholitha nebritana_) 156
106. Larch Moth (_Coleophora laricella_) 157
107. Wings of a Bug 159
108. Bean Aphis (_Aphis papaveris_) 160
109. Corn Thrips (_Thrips cerealium_) 163
110. Wheat Midge (_Cecidomyia tritici_) 165
111. Barley attacked by Hessian Fly 167
112. Larvæ of Wheat Midge (_Cecidomyia tritici_) 169
113. Stages of Daddy Longlegs (_Tipula oleracea_) 171
114. Rain Breeze Fly (_Hæmatopota pluvialis_) 174
115. Caterpillar Fly (_Tachina fera_) 175
116. Turnip infested by Cabbage Fly (_Anthomyia brassicæ_) 177
117. Ribbon-footed Corn Fly (_Chlorops tæniopus_) 179
118. Stages of ditto 181
119. Wheat Plant distorted by winter generation of ditto 181
120. Stages, etc., of Frit Fly (_Oscinis frit_) 183
121. Stages of Horse Bot Fly (_Gastrus equi_) 190
122. Horse Louse (_Hæmatopinus macrocephalus_) 194
123. Common Snake Millipede (_Julus terrestris_) 195
124. A Spider (_Salticus scenicus_) 196
125. Mange Mite of the Pig (_Sarcoptes scabiei, var. suis_) 197
126. Ditto 198
127. The Dog Tick (_Ixodes ricinus_) 203
128. Diagrammatic transverse section through a Thread Worm 210
129. Tail of male _Strongylus armatus_ 213
130. Encapsuled Muscle Trichinæ in flesh 217
131. Male Intestinal Trichina 217
132. Rye Plant in the later stage of the Eelworm Disease 222
133. Ear Cockles of Wheat 225
134. Stages of Beet Eelworm (_Heterodera Schachtii_) 226
135. _Tænia saginata_ 232
136. Common Tapeworm (_Tænia officinalis_) 234
137. Tapeworm Larva (_Tænia solium_) 234
138. Types of Bladder-worm 235
139. Measle of _Tænia solium_ 235
140. Measles in Pork 236
141. Liver Fluke (_Distoma hepaticum_) 241
142. Life History of Liver Fluke 242
143. Diagrams of Molluscs 246
144. Grey Field Slug (_Limax agrestis_) 249
145. Common Starfish (_Asterias rubens_) 252
146. Freshwater Polype (_Hydra_) 254
147. A Jellyfish (_Pelagia noctiluca_) 254
148. A Sea Anemone (_Sagartia nivea_) 254
149. Proteus Animalcule (_Amœba_) 255