232 Scientific Notices — Chennstry. [March', 



limestone of Jamaica seems, from M. de Humboldt's description, 

 to occur both in Mexico and Venezuela. 



Feb. 3. — A paper was read, entitled, '' Remarks on some 

 Parts of the Taunus Mountains, in the Duchy of Nassau ; " by- 

 Sir A. Crichton, VPGS. Sec. An abstract of this paper will be 

 given in our next. 



MEDICO-BOTANICAL SOCIETY OF LONDON. 



On Monday, Jan. 16, this Society held its Anniversary Meet- 

 ing ; when the following Officers and Council were elected for 

 the present year : — 



Coimcil. 



President.—SirJ. M'Gregor, MD. FRS. 



Vice-Fresideiits.—W. T. Brande, Esq. FRS. ; Sir A. Cooper, 

 Bart. FRS.; Sir A. Crichton, FRS. Sir W. Franklin, FRS. ; 

 E. T. Munro, MD. ; J. A. Paris, MD. FRS. 



Treasure)'. — H. Drummond, Esq. FSA. 



Director. — J. Frost, Esq. FSA. 



Auditor of Accounts. — W. Newman, Esq. 



Secretary. — R. Morris, Esq. FLS. 



T.Gibbs, Esq. FHS.; T.Gordon, MD. MRAS.; T.Jones, 

 Esq.; G. H. Roe, MD.; J. G. Smith, MD. : W. Yarrell, Esq. 

 FLS. 



The gold medal of this Society was awarded to Matthew 

 Curling Friend, Esq. Lieutenant in the Royal Navy, and FRS. 

 for his communication respecting certain articles of the materia 

 medica used in Africa ; and the silver medal to James Hunter, 

 Esq. FHS. 



E. W. B. 



Article XIII. 

 SCIENTIFIC NOTICES. 



Chemistry. 



1. Account of Prof. Berzelius's Method of defecting Arsenic in 

 the Bodies of Persons poisoned. 



Prof. Berzelius has lately sfiven some instructions for the dis- 

 covery of arsenic in persons that have been poisoned with it. 

 He considers the reduction of arsenic to the metallic state as the 

 only incontestible proof of the presence of this poison. Arsenic 

 may occur in two ways, viz. when it is found in substance (in 

 the state of arsenious acid) in tile dead body, and when it is not 

 found in this state ; though the intestines of the dead body may 

 contain it in the state of a solution. 



In the first of these cases, it is easy to determine the presence 



