338 OBSERVATIONS ON THE DISEASES, &c. 



defervedly, a member of our Society ; for fure no treatife ever 

 • laid before us promifed a wider field of public and private 

 GEconomy, and of courfe none ever came more immediately 

 under the fpirit and purport of our inftitution. 



I am, Sir, with hearty wi flies for the fuccefs and extended 

 range of your purfuit, 



Your molt obedient, humble Servant, 



(Signed) MATTHEW GUTHRIE. 



To Mr. Forfyth, Kenjington. 



P. S. As the extremes of our climate may produce cafes 

 which are not likely to happen in your temperate ifland, 

 Count Anhalt will be happy to fee more obfervations on fuch 

 accidents in any future letter you may addrefs to the Society. 

 A paper of mine on the Ruffian Climate, in the fecond 

 volume of the Philofophical Tranfa&ions of the Royal Society 

 of Edinburgh, may probably afford you all the information 

 neceflary to judge of what modification your fyftem may 

 require in this country, although I do think it applicable 

 every where, with poffibiy fome little alteration in the con- 

 fidence of your plafter, to fuit extremes of heat and cold. 

 This letter being of a public nature, intended to teftify the 

 fenfe of the {Economical Society of Peterfburg, on your 

 nfeful difcovery, you may make what ufe of it you pleafe. 



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