193. 
First Province, PSYCHONOMY.—I. Department, Grossoxoey, in- 
cluding Grammar and Languages. II. Pavewtnben including Rheto- 
ric, Logie: Phrenics, Ethics, and Education. III. Nomoxoey, inclu- 
~ ding Law and Government, and Political Economy. IV. TuEotocy, 
including Paganism, Mahomedanism, Judaism, and Christianity. 
Second Province, ETHNOLOGY.—V. Gzocrarny, including Sta- 
tistics, and Voyages and Travels. VI. Curonocrapny, including Civil 
History, Chronology, and Antiquities. VII. Brocrapuy, including Her- 
aldry, Autographics, and Sphragistics. VIII. Seema inohieliity 
, Romance, and Miscellaneous Literatu : 
“Third Province, PHYSICONOMY.—IX. Shinde including 
Satire and Analytic Geometry, and the Calculus. X. Acropnys- 
Ics, or Natural Philosophy, including Astronomy and Chemistry. XI. 
IDiopHysics, or Natural History, including Geology. XII. Anpro- 
PHYsics, or the Medical Sciences, including Surgery. 
Fourth Province, TECHNOLOGY.—XIII. Arcurrecunics, or the 
: Arts of Construction and Conveyance. XIV. Curzorscunics, Agri- 
culture, Manufactures, and Commerce. XV. Macnerecunics, or the 
Arts of War, by land and by sea. XVI. Cattorecunics, or the Fine 
Arts, exclusive of Poetry. 
| oie MISCELLANIES. 
; FOREIGN AND DOMESTIC. 
“Tt  On the supposed conversion of Carbon into Silicon, as stated 
to the Philosophical Society of Edinburgh, by Dr. Brown. See this 
Spgs Vol. xx1, p. 208. 
TO PROFESSOR SILLIMAN. 
~ Dear Sir—You are already aware, that in the beginning of last sum- 
mer, a paper written by Mr. Brown, and asserting as the result of a 
series of experiments, the formation of silicon, and its consequent 
: identity with carbon, was presented to the Royal Society of Edin- 
te burgh by Dr. Christison. Notwithstanding the improbability of this 
4 result, the high reputation of Dr. Christison as a chemist, and the belief 
that he must have entertained a very favorable opinion of the scientific 
acquirements of an experimenter whose conclusions, although of a 
aracter so extraordinary, he was willing to introduce to the world, 
impressed Dr. Mitchell of this city with the belief that the facts thus 
brought before the public, merited an examination, which might serve ” 
either to detect their error or confirm their truth. As I understand that 
“you have expressed a desire to receive some account of the experi 
ments which he undertook for this _ in which I had the honor 
Vol, xL11, No. 1.—Oct.-Dec. 1841. 
