CONTENTS 



THE FROG (PLATES I. TO VII.) PAGE 1 



THE CRAYFISH (PLATES VIII. TO X.) ... ... 31 



THE EARTHWORM (PLATES XL, XII.) ,,45 



THE SNAIL (PLATES XIII., XIV.) ..... 5S 



THE MUSSEL (PLATES XV., XVI.) .... ,,61 



THE HYDRA (PLATE XVII.) 



THE UNICELLULAR ORGANISMS (PLATE XVIII.) 



THE FUNGI (PLATE XIX.) . . T . 



THE STONEWORTS (PLATE XX.) .... 



QC 



THE FERN (PLATES XXI., XXII.) 



no 



THE FLOWERING PLANT (PLATES XXIII., XXIV.) .. 



APPENDIX AND BIBLIOGRAPHY ...... 



