x SCIENCE FROM AN EASY CHAIR 



FIG. PAGB 



15. DRAWING FROM LIFE OF THE DESERT SCORPION 



(BUTHUS AUSTRALIS, LlN.), FROM BlSKRA, NORTH 

 AFRICA . . . . . . .109 



15 sis. HIGHLY MAGNIFIED DRAWING OF A STINGING HAIR 

 OF THE COMMON NETTLE .... 



16. THE HERALDIC DRAGON ..... 



17. THE HERALDIC GRIFFIN ..... 



18. HERCULES DESTROYING THE HYDRA 



19. THE HERALDIC WYVERN ..... 



20. THE HERALDIC BASILISK, ALSO CALLED THE AM- 



PHYSIAN COCKATRICE ..... 



21. THE CHINESE IMPERIAL DRAGON .... 



22. A FLYING SNAKE WITH Two PAIRS OF WINGS . 



23. THE " DRAGON " GUARDING THE TREE IN THE GARDEN 



OF THE HESPERIDES ..... 



24. A VOTIVE TABLET ..... 



25. ANCIENT ROMAN PAINTING OF A SO-CALLED MARINE 



SERPENT ....... 



26. EGYPTIAN FOUR- WINGED SERPENT 



27. TWO-WINGED SERPENT ..... 



28. AN OYSTER WITH THE RIGHT-SIDE SHELL REMOVED . 



29. PART OF A Row OF THE LASHING HAIRS OR "CILIA" 



WHICH COVER THE GlLLS OF THE OYSTER 



30. THE ANIMAL OF AN OYSTER REMOVED FROM THE 



SHELL ....... 



31. THE EGGS OF THE OYSTER .... 



32. THE SPERMS OR SPERMATOZOA OF A RIPE OYSTER 



33. DEVELOPMENT OF THE EGG OF THE COMMON OYSTER. 



34. FREE- SWIMMING YOUNG OYSTER OR OYSTER -LARVA . 



35. YOUNG OF THE POND-MUSSEL AFTER ESCAPING FROM 



THE MATERNAL GILL-POUCH .... 



36. SIMPLE "CELLS," CONSISTING OF NAKED PROTOPLASM, 



CHANGING SHAPE AND TAKING IN SOLID FOOD PAR- 

 TICLES ....... 



37. CELLS FORMING TISSUES ..... 



