.270 ^'^ """"E FASCINAflMO FACULTY 



the zinc, the white the acid liquor, and the fliaded part the 

 wood: the fcale is made large for the fake ofdiftindtnefs ; two 

 fpigots or turncocks are adapted to the end by which the liquor 

 may be drawn off; a contrivance of great ufe, but impra6lica- 

 ble in the prefent form j only two convolutions of the plates 

 are exprefled, and the turns are made about three inches wide, 

 to facilitate the foldering of the zinc plates to the copper ; 

 the liquor is confined in as fmall a fpace as poffible, to prevent 

 the unneceflary wafte of acid. It may alfo be con{lru6led 

 with one metal only, on Mr. Davy's plan ; in that cafe, the 

 fulphuret will occupy one fide of the plate, and the acid the 

 other. Hoping that the above may merit a place in your 

 very excellent Journal, and be of ufe to my fellow labourers 

 •m fcietice, 



I remain. Sir, 



Your mod obedient humble Servant, 



I. R. I. an old Correfpondent, 



Edinburgh, March 13, ISOk 



VII. 



J Meuwir concerning the Fafcinatihg Faculty which lias been af- 

 ci*^cd to the Rattle-Snake and other American Serpents, By 

 Benjamin Smith Barton, M. D*. From the Ainerican 

 Tranfadions, Vol. IV. 



FiDEM NON ABSTULIT ERROR, 



Naturalifts fre- NaTURALISTS have not always been philofophers. The 



quently too cr€» „. , , ^ ,. • , . , • t • i • t 



tiulous. flight and luperncial manner in which they nave examined 



* Since this memoir was read before the Society, it has been con- 

 fiderably altered, and fomewhat enlarged. I hope, the alterations 

 will render it more worthy of the notice of thofe who, like myfelf, 

 derive plealure and happincfs from the contemplation of the works 

 and operations of nature, on this globe, 



1 fear, I fliall be thought to have treated the queftion in too dlf-i 

 fufive a manner. I have not, indeed, laboured to be concife. 

 if the memoir is more extenfive than was neceftarj', I flatter myfeli 

 it will be admitted that it, at leaft, contains fome new and interei 

 jng fafts. I fubmit it to its fate. B. S. B. 



This interefting paper has been deferred from the preffure of otW 

 matter of more immediate and temporary claim. W. N. 



mat 



