INSTANCES OF THE WONDER OF LIFE xi 



PAGE 



the strange deep-water fishes of Lake Baikal . . .113 

 eighty seeds from a clodlet on a bird's foot . . .114 

 water animals which do not get wet . . . .115 



the water -spider's sub-aquatic nest . . . . .116 



fishes out of water . . . . . . .118 



the golden age of earthworms ...... 122 



caves as refuges for weaklings ...... 123 



various solutions of the problem of flight .... 124 



many different kinds of ' swooping ' Vertebrates . .124 

 the flights of gossamer spiders ..... 126 



productivity of fishes, rats, rabbits, etc. .... 130 



a starfish with 200 million eggs 133 



fourteen species on one stone . . . . . .135 



red snow ......... 135 



spider living in a pitcher-plant ..... 137 



nets made by caddis -worms 138 



the Penelope spider . . . . . . . .141 



the Antarctic fauna ....... 142 



desert vegetation ........ 144 



rock-boring animals ....... 145 



climbing fishes ........ 145 



adaptations of aquatic insects ...... 147 



frogs in salt water . . . . . . . .148 



nesting of the White Tern 149 



remarkable nest of a tree-frog 150 



a mouthless carp 150 



extraordinary tenacity of life 152 



life of tissues and organs excised from the body . . 153 

 stinging by a decapitated wasp ..... 153 



the Big Trees, over 2,000 years old 154 



the habits of the land-crab 157 



skates in fresh water ....... 158 



the summer sleep of mud -fishes . . . . .160 



turning white in winter ....... 162 



the Ruffed Grouse beneath the snow . . . .162 



the migration of birds . . . . . . .163 



the Arctic Tern in the Antarctic circle . . . .165 



the return of a swallow to its birth-placo . . . 171 



flying at the rate of 100 miles per hour .... 174 



the power of way-finding in birds ..... 180 



