LIST OF ILLUSTRATIONS (PAET II) 



FIGURE PAGE 



135-8. FRONTISPIECE The development of the feathers of the young Robin. 



139. A Potato tuber ........ 2 



140. The developing "eye" of a Potato tuber ..... 3 



141. A " Geranium " cutting ....... 5 



142. Young Lily bulbs growing from an old scale ..... 6 



143. A Begonia leaf producing new plants . . . . .7 



144. Young Bryophyllum plants growing from a detached leaf ... 8 



145. A Frog's egg . . . . . . . . . 9 



146. A Crocus ......... 10 



147-9. A Trout egg and others faintly " eyed " and fully " eyed " . . 12 



150. A Trout egg hatching . . . . . . . .13 



151. A newly hatched Trout or "A lie vin ;3 showing the yolk sac . . 13 



152. A young Trout in the " fry " stage after the yolk sac has been absorbed . 14 



153. A Terrarium with accommodation for amphibious animals . . .16 



154. The nest of the seven-spined Stickleback . . . . .18 



155. A Potato tuber showing " sprouts " . . . . .20 

 156-7. A Frog's egg, 8 days old, and one 12 days old .... 21 



158. A developing Chick, two days old ...... 22 



159. A closed-in Nesting Box ....... 24 



160. A Nesting Box with the side open ...... 24 



161. A Series of Chickens of the same brood at different ages showing the re- 



placement of the downy covering by feathers .... 26 



162-3. A Tadpole just hatched and one showing gills and mouth ... 28 



164. A developing Chick, three days old ...... 29 



165. Horse-chestnut buds ........ 31 



166. A Potato showing young shoots ...... 35 



167- A Horse-chestnut bud opening ...... 36 



168. Decaying vegetable matter pulled into the ground by a worm . . 39 



169. An Earthworm ........ 41 



170-1. A Tadpole, 3 days after hatching, and one showing the hind limb . . 42 



