confent in what has been jult now d€clared3& the Controvert 
fie being about Matter ef /tj^?, wherein Aiuharity,Numbef,and 
Reputation uiiift caft the Ballance, Monf, Hevelius , who is as 
well known for his Ingenuity, as Learning ^ will joya and ae- 
qiiiefce in that fentiment. 
Of aCorrefpndencyj:o he pvcured^for the Fin- 
ding out the True diflance of the Sun ani^ 
Moon from the Earth ^hy the Favahx^obfer- 
ved under (or neer^ the fame Meridian. 
Seeing that the knowledge of this diftance may prove of im^ 
portant Ufe, for the Perfecting of Aftronomy, and for the 
better eftablifliing the do;9:rine of 7{efraUimsi it is in the 
thoughts of lome very curious Perfons in Enqjand^ for the 
finding out the fame 5 to fettle a Correfpondency with foine 
others abroad, that are undcrftanding in Aftronomical mat- 
ters, and liv€ in places farr diftant in Latitude^ and cinder (or 
near ) the fame Meridian. 
To perform wiiich^ the following Method is propofed to 
beobferved^ vi';{. That at certain times agreed on by two 
Obfervatours, making ufe of Ti?/<?/c^/^^/3 large^ good and well 
fitted for this purpofe, by a meafuring,rod^ placed within 
the Eye^glafs at a convenient diftancCj that it may be diitindJ:- 
ly feeuj and (erve for meafuring fmall diftances by minuts 
and feconds ( which is eafie enough in large Telefcopes ) that,: 
I fayj each of fuch obfervers,. thus furnifli'c, fliall obferve the 
vifibfe way of the MoenzmowgihcFixt flats, (by taking her 
exad: diftance from any F^^iJ fiarr, that lyes in or very near 
her v/ay, together with the exadl time of her lo appearing) 
and the then apparent Diameter of her Disk 3 continuing 
thefe Obfervations every time for two or three hours, chat fo^ 
