A 



JOURNAL 



OF 



I^ATURAL PHILOSOPHY, CHEMISTRY, 



AND 



THE ARTS. 



OCTOBER, 1807* 



ARTICLE I. 



Description of a correct Chamber Barometer. In tt Letter 

 from John Gough, Esq. 



To Mr. NICHOLSON. 



SIR, Middleshaiv, Aug. 17, I8O7. 



ANY intelligent persons in the country have been pre- Correct baro- 

 vented from, entering upon a course of meteorological ob- meters not ea- 

 servations, by the want of good barometers ; which must be i^ the'^coumry. 

 procured from London, not without considerable risk. I 

 flatter myself, the present letter will remove this objection 

 to the study in a great measure ; for it describes an easy, 

 and perhaps original method of correcting the imperfections 

 of the instrument, and renders it fit for the purpose of every 

 meteorologist, whose pursuits and observations are confined 

 to his parlour or his study. When the correction in ques- 

 tion first occurred to me, some time ago, I communicated 

 it to Mr. Morris, of Kendal ; who made a barometer on the 

 principle explained to him, which has been some time in my 

 possession, and has fully answered my expectations. The 

 above gentleman also informs me, that any artist of moderate 

 abilities may be instructed how to construct an instrument 

 of the same kind, by a simple diagram properly explained: 

 VoL.XVIII— Oct. I8O7. G the 



