LIST OF ILLUSTRATIONS 



FIGURE PAGE 



A SWARM OF MAY-FLIES Frontispiece 



1. EGGS OF THE SQUID (Loligo) 11 



2. SHOAL OF JELLY-FISH . . 13 



3. COMMON BROWN LIZARD ' / . . . - . . . 18 



4. THE SLOW- WORM (Anguis fragilis) . . . . . 18 



5. NEWTS / 20 



6. THE RELATION BETWEEN CENTIPEDES AND INSECTS . 39 



7. SWALLOW ON THE WING . . . . . . . . 41 



8. GREATER HORSESHOE BAT . . . . .... 41 



9. WHITE SEAL 54 



10. DISSECTION OF BIRD (PIGEON) . . ... . . 59 



n. SAND-HOPPER (Gammarus) . . . '. . . '. . 68 



12. TUBE-BUILDING SAND-HOPPERS 69 



13. GROUP OF BURYING BEETLES . . . . . 70 



14. ORCHESELLA : A PRIMITIVE INSECT . ... . . 71 



15. MUSSELS AND PEA-CRABS 81 



1 6. How A STAR-FISH OPENS AND EATS AN OYSTER . . 83 



17. BLACK-HEADED GULL, NEST AND YOUNG . . . . 86 



18. TONGUE OF HOUSE-FLY , . ..... . 91 



19. WHEEL- WEB OF GARDEN SPIDER . . . . . . 93 



20. WEB OF Agelena ON GRASS 95 



21. NEST OF YOUNG Agelena ON FURZE 96 



22. NEST OF CAVE SPIDER 97 



23. BRINE-SHRIMP (Branchipus) . . . .. ... 109 



24. DAPHNIA, THE WATER FLEA . . . . . . in 



25. HEAD AND THORAX OF CRAYFISH, SHOWING GILLS . . 112 



26. A GROUP OF SAND-BURROWING ANIMALS (HEART- 



URCHIN, LUGWORM, COCKLE, MUD-CLAM, AND MASKED 

 CRAB) . . . .114 



27. THE DORMOUSE . 124 



