THE CELL DOCTRINE : 



ITS HISTORY AND PRESENT STATE. 



FOR THE USE 



STUDENTS IN MEDICINE AND DENTISTRY. 



ALSO, 



A COPIOUS BIBLIOGRAPHY OF THE SUBJECT. 



JAMES TYSON, M.D., 



LECTURER ON MICROSCOPY IN THE UNIVERSITY OF PENNSYLVANIA, AND ON PHYSIOLOGY 



IN THE PENNSYLVANIA COLLEGE OF DENTAL SURGERY; FELLOW OF THE 



COLLEGE OF PHYSICIANS OF PHILADELPHIA, ETC. ETC. 



A COLORED PLATE AND OTHER ILLUSTRATIONS. 



PHILADELPHIA: 



LIKDSAY & BLAKLSTOK 



1870. 



R 



