(iioi) 
being, tht Caroline^ of Mt, Street ^ and thefe Ifhalihere pre- 
fent you with at large. Thefe Supputations , when ! firft fra» 
med them, I fitted to the Meridian of my habitation, inten- 
ding them only for my own private ufe ^ but upon fecond confi- 
deration , finding , how much the Obfervatlons, if rightly and 
accurately performed , might conduce to the better ftating the 
Dimenfions of the Moons Orbitc, and folving the Irregu'ari- 
ties of fcveral Fhanomena^ Irefolv'd to communicate them to 
the Ingenious, and to defire their utmoft care in obferving thefe 
Appearances, which I had not un-accurately calculated. And 
I now humbly proftrate them to their perufalj defiring, thar ^, 
iftheyfeem worthy 5 you will be pleafed to impart them in fuch 
3 way 5 as you fhall think fit^ to fuch intelligent and induftri' 
ou's perfons either of the R. Society ^ or others, as will be ac» 
curate in their Obfervations 5 and willing to communicate what 
they (hall have obferved, 
I hope 5 My Lord^ you will not account me faulty 
for having adapted the Calculations to the Meridian 
of a place no more famous than Derby . You had 
the occafion before^ to which I may add , that the 
Meridian paffing over Derby is nearer the middle of 
England^ than that of L(?.W(?;^ ; and that its L^^/We 
bi-fei^s it nearer \ than any yet ftated : So that this 
Town , which is feated in Vmbilico qnafi Kegni^mu^ 
needs be the moft convenient place , that can be 
chofen 5 where-on to fix our Calculations. For, the 
diftance of any place within this kingdom from it^will 
not much vary the manner of their Appearance in any 
of the Phenomena , except the Eclipie of the Sun : 
for, in the Occultations , the Stars will appeare to 
pafs nearly under the fame Angles and Spots of the 
N nnnn a ' Moon 
