SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE. 



IN VESTir; ATIONS, 



CHEMICAL AND PHYSIOLOGICAL, 



REIiATIVE TO CERTAIN 



AMERICj\N yertebrata. 



BY 



JOSEPH JONES, M.D., 



PROFESSOR OF ClIEJEISTRY IN THE SAVANNAH MEDICAL COLLEGE 



GGT 2 0 1937 



[accepted for publication, march, 185G.] 



