314 PROCEEDINGS OF [ 1843 , 
From Dr. Frederick Tamnau, Jr., Berlin, May 24, 1843: Pro¬ 
posing exchanges, and enclosing list of minerals, &c. 
From Michael Mahon, U. S. Consul, St. Jago de Cuba, May, 
1843 : Has shipped a box of copper ores from the mines of Cobre, 
per brig Emily, Capt. John H. Bernadon, bound for Philadel¬ 
phia. 
From H. Wheaton, &c., Berlin, June 1, 1843: On Baron Von 
Humboldt’s work on the physical geography of Central Asia. 
From Rev. David Thom, Liverpool, June 2, 1843: Acknow¬ 
ledging letter ; is highly gratified at being made a member of the 
Institute ; will shortly forward, through Mr. J. B. Murray, of New 
York, several works by himself and his brother, now acting British 
Consul, at Canton, a distinguished Chinese scholar. 
From Dr. Thomas Sewall, London, June 3, 1843: Remarks of 
eminent persons with whom he has conversed concerning the Insti¬ 
tute, showing their favorable feelings, &c. 
From C. S. Todd, American Minister, St. Petersburg, ^ June: 
Acknowledging letter of 13t'n of May ; has submitted it to M. Pierre 
ChicachefF, whose promised books and maps will be sent to the In¬ 
stitute by the first opportunity. 
From Hon. Richard Rush, Philadelphia, June 7, 1843: Present¬ 
ing several valuable works, and offering observations respecting 
the Smithson fund, in continuation of a former letter on the same 
subject. 
From Thomas C. Shelden, Detroit, June 10, 1843 i Has forward¬ 
ed by W. T. Carroll, of Washington, a specimen of selenite, from 
Grand River, where it occurs in great quantity, and asks its quality, 
&c. 
From J. V. C. Smith, Boston, June 10, 1843: Presenting thanks 
for his election, and offering to forward soon to the institute some 
presents worthy of acceptance. 
From William Ferguson, London, June 10, 1843. 
From Abiel Abbott, Peterboro, New Hampshire, June 12, 1843: 
Will aid the institute, &c. 
From Cyrus Mendenhall, (to Mr. Ellsworth.) Cleaveland, Ohio, 
June 17,1843: Offering to deliver at Washington, for $ 1500, the mass 
of native copper now lying on the Ontanagon river, lake Superior. 
From Lieut. Cadwalader Ringgold, U. S. Navy, Baltimore, June 
19, 1843. 
From Ambrose Baber, Charge d’Affaires, Turin, June 20, 1843 : 
Stating that Mr. Lester, Consul of the United States, at Genoa, will 
ship, via New York, the volumes referred to in his last letter; also, 
that the Professor of Natural History in the Royal Academy of 
Sciences will send by the same vessel a box of books, &c., as a 
present for the Institute. 
From William Anderson, Washington, June 23, 1843: Commu¬ 
nicating a paper on the French Revolution. 
