TABLE OF CONTENTS XXI 



CHAPTER PAGJ 



VIII. (OPTIONAL.) ADDITIONAL TOPICS IN HUMAN BIOLOGY 139 



I. The Skin 139 



II. The Skeleton , . 144 



III. The Muscles . . . . . . . . . 150 



IV. The Nervous System 154 



V. The Eyes . 162 



VI. The Ears * ' '.'.'.-, 166 



IX. (OPTIONAL.) GREAT BIOLOGISTS ... . 168 



APPENDIX .,... . . - . 171 



I. Laboratory Equipment . , >' . . 171 



II. Order of Topics ; . . . . . .178 



III. Biology Notebooks 181 



IV. Review Topics in Plant Biology .... 188 

 V. Review Topics in Animal Biology .... 197 



VI. Review Topics in Human Biology .... 202 



VII. List of Suggested Books of Reference in Biology . 207 



