VI. jin Account of certain Motions which Small Lighted 

 Wicks acquire^ when fwimming in a Bason of On. ; 

 together with Observations upon the Phenomena 

 tending to explain the Principles upon which fufh Mo- 

 tions depend: Communicated in a Letter from PATRICK 

 Wilson, F. R. S. Edin. and ProfeJ/br of Practical JJro- 

 nomy in the Univerfity of Glafgow, to John Playfair^ 

 F. R. S. Edin. and Profejfor of Mathematics in the Uni- 

 verfity of Edinburgh. 



[Read May 5. 1795.] 



Dear Sir, Glafgow College, April 28. 1795. 



I Now fit down to give you fome account of the little hydro- 

 flatical lamp, which I fo briefly mentioned to you in a for- 

 mer letter. As I am far from being fure whether what I have 

 to offer upon this fubjeA may be entitled to the notice of the 

 Edinburgh Royal Society, fo I will refer this point to your 

 tietermination, after you have had leifure to coniider the con- 

 tents. 



The phenomena,^ treated of in the fequel, were quite new to- 

 Dae a few month* ago, and, fo far as I know, have not hitherto 

 been attended to, or defcribed by any body elfe. What I have 

 called the Hydrojlatical Lamp, confifts of a fmall circular patch 

 of common writing paper, about three eighths of an inch in dia- 

 meter, having about a quarter of an inch, of foft cotton thread 



U i Handing 



