I. - . ■■ '■ ".I! l I . I l ■ i l J i li mn ■ ■ i iM ii MP l I — — ■ 



JOURNAL, 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND 



1 H h AR.1 j£ 







■ - 



APRIL, 1802. 







ARTICLE I. 



Experiments on the Tranfmiffwn of Heat doivnivards through 

 Mercury and through Oil contained in Veffeh of Ice ; by iiltich 

 thofe Fluids are proved to be proper Conductors of Heat. By 

 Mr. John Murray, Leclurer in Chemijlry, Materia Me- 

 dico, and Pharmacy, at Edinburgh. Communicated by the 

 Author. 



JlN a former Memoir "^ I related feveral experiments made Review of the 

 with the yiew of determining the queftion, whether fluids are tr X a nfmittTng° 

 capable of conducting caloric, and ftated the fources of fallacy heat downwards 

 by, which any ftricl conclufion from thefe is invalidated. The c roug a ul * 

 experiment calculated to determine this queftion with greateft 

 certainty is that of heating a fluid downwards by bringing a 

 hot body into contact with its upper furface ; but in making 

 this experiment a fource of error is always prefent in the con- 

 dueling power of the veflfel in which the fluid is contained. 

 When the upper portion of fluid has its temperature raifed by 

 the application of a hot body, part of it rauft flow towards the 

 fides of the veflel, and give out part of its caloric ; the (olid 



* Philof. Journal, I. 165. where by miftake the author's titles 

 are erroneoufly given.— W. N. 



Vol, I.— April, 1S02. R matter 



