INTRODUCTION 



59 Zoology. 



590 Form divisions [see Table B]. 



59 : Relation divisions. 



591 Biological Zoology. 



5911 Physiology. 



59111 Circulation. 



5 9 1 1 2 Eespiration. 



59113 Nutrition. 



59114 Secretion and Excretion. 



59115 Variation. 



59116 Eeproduction. 



59117 Locomotion. 



59118 Nervous functions. 



5912 Pathology. 



5913 Embryology. 



5914 Morphology. 



59141 Organs of circulation. 



59142 Organs of respiration. 



'59 r 43 Organs of nutrition. 



59144 Organs of sacretion. 



59146 Organs of reproduction. 



' 5 9 1 4 7 Organs of movement. 



59i47i Osteology. 



'59*48 Nervous system. 



'59*49 Regional. 



'59 r 5 Habits and behaviour. 



'59 J 6 Economics. 



"59*6 1 Usefulness. 



'59*65 Noxiousness. 



5918 Histology. 



(2-0) Geographical Zoology. 



[divided as in Table CJ. 



20 



