CONTENTS 



CHAP. PAGB 



INTBODUCTION . . . . . ./ . v 



I. MICROSCOPIC WONDERS 9 



II. AQUATIC CRUSTACEANS , . .28 



III. INSECTS ...... -.. . 33 



IV. INSECTS (continual) . . . . . .42 



V. WATER SPIDERS AND MITES . . . .69 



VI. INHABITANTS OF THE WATER-FILM . . . 65 



VII. AQUATIC WORMS 70 



VIII. THE HYDRA . . . . . . .84 



IX. SNAILS . . . . , . . . .86 



X. FROGS . . . . . . . .87 



INDEX 93 



