DlKECTIO:NrS 



FOR WORK IN I'llK 



HISTOLOGICAL LAllORATOFJ 



MORE ESI'ECIALLV AKRAXCiED EUR THE USE OF 

 CLASSES IN THE UNIVERSEFY OF MICHIGAN 



G. CARL IIUBF.K, M. D. 



Assista)i/ Professor of JJis/o/ogy and lunbryolo^y 



SECOND EDITION. 



GEORGE WAHR 



PUBLISHER AND BOOKSELLER 



ANN ARBOR, MICHIGAN 



