C 5O 
Tannel, and one Inch high, which you (ee is very neac 
five Pound, which you will alfo find will only raife the 
Cylinder higher by iwth. part. But now I have detained 
you fo long, and I am afraid needlefly • fo that I truft 
to your Goodnefs for Pardon in this, and what elfe you 
fliall here find amifs upon the fcore of my Eyes, which 
oblige me to truft more toothers, than otherwife I 
ftiould. I am 
Taur mofi Humhle Servant^ 
Rich. Townley. 
P. S. In a fate Pofthumous Book of Mr. Boyle\ I find 
an Account of fomeof my Obfervations of the Barometer, 
without any hint of the Ufe intended to be made of 
them, which make them feem to be very odly brought 
in : All that I can remember, is, that he was pleafed to 
hy his Commands upon me, to fend him an Account 
of the feveral times that I had found the Mercury above 
or near 30 Inches high, or not much above 29 during 
the time he mentioned : But I know not whether I did 
hint to him, or indeed did then really know my felf the 
great Harmony betwixt thQ Mercurial Standards at Lon-^ 
den and here at Townley : For by a whole Month's Ob- 
fervations, Mr. Flamftead was pleafed to ftnd me, the 
Mercury ftill role and fell both there and here exaftly at 
the fame time; I always found it rather more than of 
an Inch lower here than at London^ by reafon that we 
are feated though in a leeming Valley, in refped of the 
Neighbouring Grounds, yet we are confiderably higher 
than the other low Lands near the Sea, where the Stan- 
dard differs little from that at London, i Ihould be ve- 
ry glad to know whether the like Agreement has beea 
obferved in France , or other remoter Parts, betwixt 
thei^ 
