390 
EDITORIAL. 
Dr. Guthrie's Report was received too late to insert it among the 
selected matter in the fore part of the Journal, which will explain why it 
was put in small type under the head of Varieties. 
We have received the following pamphlets from their authors : 
1 Report made to the Hon. Thomas Corwin, Secretary of the Treasury, by 
Prof. R. S. McCulloch, of his operations at the Mint of the United States, 
in refining California gold by his zinc method. 
Letter of Prof. R. S. McCulloch in reply to the report of the Director of 
the Mint. 
An Address delivered before the Medical Society of Virginia at its 27th 
annual meeting held in Richmond, April 1852. By Beverly R. Wellford, 
M. D., etc. President of the Society. 
Erratum. — At page 314, in the article " Pharmaceutical Apparatus," 
the first paragraph, second line, should read thus: " "We described a mill 
intended for the apothecary's use, by which comminution, laboriously 
and," &c. The words in italics were accidentally omitted, and our readers 
will please to note the missing words on the margin. 
