CONTENTS 
CHAPTER 
I,—IntRopuUCcTION 
JI.—THE CELL AND PROTOPLASM 
II.—Tue Protozoa . 
IV.—THE SPONGES 
V.—THE CQ@LENTERATES 
VI.—THE worms 
VII. ANIMALS OF UNCERTAIN RELATIONSHIPS 
VIIJ.—Mouuusks . 
IX.—ArRtTHROPODS. CLASS CRUSTACEA 
X.—ARtTHROPODS. CLass INSECTS . 
XI.—ARTHROpPoDS. CLASS ARACHNIDA 
XII.—EcaInoperMs 
XIII.—THE CHORDATES . 
XIV.—THE FISHES 
XV.—THE AMPHIBIANS 
XVI.—THE REPTILES 
XVII—THE BIRDS . 
XVIII.—THE MAMMALS 
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