Illustrations xv 



FACING 

 PAGE 



PHOTOGRAPH OF THE ENTIRE SHELL OF THE PEARLY NAUTILUS . .186 

 NAUTILUS . . . . . . . . . . . .186 



SHOEBILL ............ 187 



Photo: W. S. Berridge. 



THE WALKING-FISH OR MUD-SKIPPER (Pcriophthalmus), COMMON AT THE 

 MOUTHS OF RIVERS IN TROPICAL AFRICA, ASIA, AND NORTH-WEST 

 AUSTRALIA . . . . . . . . . . .190 



THE AUSTRALIAN MORE-PORK OR PODARGUS ..... 190 



Photo: The Times. 



PELICAN'S BILL, ADAPTED FOR CATCHING AND STORING FISHES . . 191 



SPOONBILL'S BILL, ADAPTED FOR SIFTING THE MUD AND CATCHING THE 

 SMALL ANIMALS, E. G. FISHES, CRUSTACEANS, INSECT LARVAE, WHICH 

 LIVE THERE ........... 191 



AVOCET'S BILL, ADAPTED FOR A CURIOUS SIDEWAYS SCOOPING IN THE 



SHORE-POOLS AND CATCHING SMALL ANIMALS ..... 191 



HORNBILL'S BILL, ADAPTED FOR EXCAVATING A NEST IN A TREE, AND 

 ALSO FOR SEIZING AND BREAKING DIVERSE FORMS OF FOOD, FROM 

 MAMMALS TO TORTOISES, FROM ROOTS TO FRUITS .... 191 



FALCON'S BILL, ADAPTED FOR SEIZING, KILLING, AND TEARING SMALL 

 MAMMALS AND BIRDS ......... 101 



PUFFIN'S BILL, ADAPTED FOR CATCHING SMALL FISHES NEAR THE 

 SURFACE OF THE SEA, AND FOR HOLDING THEM WHEN CAUGHT AND 

 CARRYING THEM TO THE NEST ........ 191 



LlFE-HlSTORY OF A FROG ......... 192 



HIND-LEG OF WHIRLIGIG BEETLE WHICH HAS BECOME BEAUTIFULLY 



MODIFIED FOR AQUATIC LOCOMOTION . . . . . .192 



Photo: J. J. Ward, F.E.S. 



THE BIG ROBBER-CRAB (Birgus Latro}, THAT CLIMBS THE COCONUT 



PALM AND BREAKS OFF THE NUTS ....... 193 



EARLY LIFE-HISTORY OF THE SALMON . . . . . .196 



THE SALMON LEAPING AT THE FALL is A MOST FASCINATING SPECTACLE . 197 

 DIAGRAM OF THE LIFE-HISTORY OF THE COMMON EEL (Anguilla Vulgaris) 200 



CASSOWARY ............ 201 



Photo: Gambler Bolton. 



