1842 .] THE NATIONAL INSTITUTION. 135 
ber, 1841; by William Darlington, M. D., (several copies.) — 
From the Author. 
Memorial of Joshua Leavitt, to the Legislature of New-York, setting 
forth the importance of an equitable and adequate market for 
American Wheat, accompanied with Statistical Tables ; May 17, 
1841.— From Joshua Leavitt . 
Memorial of the same to Congress, praying the adoption of measures 
to secure an equitable and adequate market for American Wheat; 
February 25, 1841.— From Joshua Leavitt. 
The Reference Book of the United States, by Edmund F. Brown ; 
1841.— From the Author. 
Map of Baltimore, of 1792.— From R. B. Fowler. 
Monuments of Washington’s Patriotism; being a fac-simile of his 
Accounts during the Revolutionary War, &c.— From the Trus¬ 
tees of the Washington Manual Labor School. 
Treatise on Anthracite Iron and the evaporative power of various 
species of Coal, by Professor Walter R. Johnson.— From the Au¬ 
thor. 
The Corresponding Secretary reported the following letters and 
communications: 
From J. Henshaw Belcher, of Philadelphia: Enclosing a memo¬ 
rial to Congress, praying that body to cause the astronomical obser¬ 
vations which have already been made to be reduced and computed 
for the establishment of the longitude of Washington, and asking the 
cooperation of the members of the National Institution in advanc¬ 
ing the object of the application. 
From Professor W. R. Johnson, Philadelphia : Submitting a paper 
on the practical determination of the heating power of Fuel. 
From J. W. Williams, U. S. Consul, Sidney, New South Wales: 
Enclosing a letter from Mrs. Dr. James Mitchell, of Sidney, who has 
presented valuable contributions to the Cabinet of the Institution. 
From W. H. Smyth, Cardiff, Wales : Stating that he had forward¬ 
ed for the Institution a specimen of a planetarium recently produced 
by Mr. Burke, of Bristol, England, &c., &c. 
From A. D. Bache, Philadelphia: On the subject of the Institu¬ 
tion to which Mr. Smithson belonged. 
