I860.] General Monthly Meeting, 198 



mineralogy of South America owes so much, has however described at 

 least six native amalgams. 



Ag« Hg. 



Agr Hga =: Age Hg + Ag Hg. 



Agj Hg3. 



Ag. Hg2. 



Aga Hg, = 2 Ag Hg + Ag Hg,. 



Ag. Hg. 



Mercury has been found pretty abundantly in many parts of the 

 Andes, chiefly as cinnabar. 



A curious combination of this metal with arsenic, sulphur, anti- 

 mony, and copper also exists, and may be termed mercurial fahlerz. 

 Resulting from the oxidation of this mineral, the singular natural com- 

 bination, constituting ammiolite, is found, which consists essentially of 

 oxide and sulphide of antimony with oxide and sulphide of mercury. 



Time alone prevented a description of many other important and 

 interesting minerals, the production of the Andes and the mountains 

 in the vicinity. 



[F. F.] 



GENERAL MONTHLY MEETING, 



Monday, February 6, 1860. 



William Pole, Esq. M.A. F.R.S. Treasurer and Vice-President, 



in the Chair. 



Matthew Bell, Esq. 

 James Butler, Esq. 

 Robert Lush, Esq. Q.C. and 

 John Morgan, Esq. 



were duly elected Members of the Royal Institution. 



Captain James Drew, Esq. and 

 Thomas Wilson, Esq. 



were admitted Members of the Royal Institution. 



The Special Thanks of the Members were returned to William 

 Salmon, Esq. M.R.I, for the following Present : 



Botanical Works of R. J. Thornton, M.D. viz. 



New Illustrations of the Sexual System of Linnaeus. (Many Portraits and 



Plates.) 2 vols. fol. 1807. 

 Botanical Extracts, or the Philosophy of Botany. 3 vols. fol. 1810. 



