TEXT-BOOK 



OF 



EMBRYOLOGY 



VOL. I 



INVERTEBRATA 



BY 



E. W. MacBEIDE, M.A., D.Sc, LL.l), F.E.S. 



PKOFESSOR OF ZOOLOGY AT THE IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY 

 SOUTH KENSINGTON 



EDITED BY 



WALTEE HE APE, M.A., F.RS. 





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MACMILLAN AND CO, LIMITED 



ST. MAETIN'S STEEET, LONDON 



1914 



