ELEMENTARY 



'EXT-BOOK OF ZOOLOGY^ 



BY 



ARTHUR T. MASTERMAN, M.A.(Cantab.) 



D.Sc. {Lond.) D.Sc. (SL A7id.\ RR.S.E. 



LFXTURER ON ZOOLOGY AND ON BIOLOGY IN THE 



SCHOOL OF MEDICINE OF THE ROYAL COLLEGES, EDINBURGH ; 



)INT-AUTHOR OF "THE LIFE-HISTORIES OF THE BRITISH MARINE 



FOOD-FISHES " ; EXAMINER IN BIOLOGY TO 



THE ROYAL COLLEGE OF PHYSICIANS, EDINBURGH; ETC. 



SEC0n6 'EDITION •' 



(WITH 411 illustrations) 



EDINBURGH: E, & S. LIVINGSTONE. 



