SAMUEL JACKSON, M. D., 



professor of the institutes of medicihe in the university op 

 pennsylvania. 



Dear Sib, — 



Knowing the enlarged and liberal views which you take of 

 medical education, and your willingness to encourage your stu- 

 dents in all inquiries tending to render them skilled and accom- 

 plished in their profession, — allow me to lay before you this humble 

 attempt to show the uniformity of the organic laws in plants and 

 animals. 



I remain, 



With sentiments of respect. 

 Yours truly, 



HAELAND GOULTAS. 



