CONTENTS. 
PAGE 
INTRODUCTION sis sciscie Gh x piscrwaiawareeass datewa Gade ies viglewins 1 
Definition of Zoology......... 0... cece ee ee enee Bisby seats 1 
Morphology’ ici’ so scss:sisisie 5 Pia erwin ears canis os e's sng Baan » 5 
Organs and their Functions,..............cceee ere eee eens 8 
Correlation of OrganB... 2.0... cece ee cence cee wereeeane 9 
Adaptation of Organs. .......... ec cece cece eee e eee eneeee 10 
Analogy and Homology... .......cssececceeeessceeeeenees 12 
PRY BIOLOGY. sccasttiesnd es 29 05.0ens tk WEN ROMER 6 E6855 12 
Pay Cholop yi isceewindic agi xs veers Metetorgieweeeeee Sebel seals 12 
Reprod WCHOD aiaisad nc ieiehans oF ssa dGhes Roan asd eiale BS 9:08. Facade 13 
Hmbryologyiccsdiscesca vai ts esas quewaesaweseeaees sees ae 13 
Classification.................+4. eee eee teen eee ences 13 
Zodgeography.......... 02s eeaees ised Handa SoBe ee eae 16 
CHAPTER I. Branch 1. PROTOZOA..........seeeeseeceee eres 17 
II. «2. PORIFERA (Sponges).................- 42 
Til. “ 3. CaiLENTERATA (Hydroids, Jelly-fishes, 
and Polyps)........se..seeeeeeee 51 
IV. ‘© 4. VERMES (Worms).........000.ceesees 96 
Vv. “«« §. EcHinopeRMaTA (Crinoids, Starfish, 
Sea Urchins, etc................ 188 
VI, “6. Moxuusca (Bivalves, Snails, Cuttles)... 220 
VIL. “7 ARTHROPODA (Crustaceans and Insects) 265 
VIII. § VERTEBRATA, 0 iceisideedesnccdind toes 369 
TX. CoMPARATIVE ANATOMY OF ORGANS..........+5 631 
Organs of Digestion, the Mouth and Teeth... 631 
Organs of Circulation..............006 seeee 635 
Organs of Respiration............0eeseeeees 637 
The Nervous System..........seeeeseeesees 638 
Organs of Sense......... cece ee sees ee eeeee 640 
