THE CELL DOCTRINE: 



ITS HISTORY AND PRESENT STATE. 



FOR THE USE OF 



STUDENTS IN MEDICINE AND DENTISTRY. 



ALSO, 



A COPIOUS BIBLIOGRAPHY OF THE^ SUBJECT. 



By JAMES TYSON, M.D., 



PROFESSOR OF GENERAL PATHOLOGY AHD MORBID ANATOMY IN THE UNIVER- 

 SITY OF PENNSYLVANIA ; ONE OF THE VICE-PRESIDENTS OF THE 

 PATHOLOGICAL SOCIETY OF PHILADELPHIA ; 

 ONE OF THE VISITING PHYSICIANS TO THE PHILADELPHIA HOSPITAL ; FELLOW 

 OE THE COLLEGE OP PHYSICIANS, PHILADELPHIA; 

 ETC., ETC., ETC. 



SECOND EDITION, 



REVISED, CORRECTED, AND ENLARGED. 



ILLUSTRATED. 



PHILADELPHIA: 

 LINDSAY & BLAKISTON. 



1878. 



