( 42 ? ) 
(Remarks on the foregoing T A B L E S. 
< 
A S exaft Tables to calculate the Eclipfes of the 
Circumjovials , would be of very great Service 
to find the Longitude of ‘Places *, fo I have fome Hopes 
that thefe Obfervations of fome of them, in more Revo- 
lutions than one of Jupiter in his Orb, may be of Ufe 
to corred, or make fuch Tables. 
1 wi(h that I could have made them more compleat 
(and in my younger, and more leifurely Days, I endea- 
voured to do it, by rifing at unfeafonable Hours, &c.) 
but befides cloudy and bad Weather, one great Hin- 
drance was the Want of Tables, to enable me to calcu- 
late the Eclipfes my felf, and the frequent Difappoint- 
ments of my Friends, that furnifhed me with Catalo- 
gues of them. And moreover, many times Company, 
and Bufinefs, and (to tell the Truth) fometimes Forget- 
fulnefs, have hindred the Conftancy of my Obfervati- 
ons : But the greatefl Chafms in them were caufed by 
fome dangerous Fits of Sicknefs, which fo impared 
me, that 1 have not dared, ever fince, to venture upon 
Obfervations at unfeafonable Hours of the Night. 
As to my Manner of obferving, it was (for the 
moft Part) with a 16 Foot Telefcope, and afterwards 
with an excellent one (not inferior to it) of 12 I Feet, 
that, at Jupiter's Light, bears an Aperture of 2 \ In- 
ches, and a Charge of about % Inches. 
And as to the Time ; I made ufe of an excellent and 
well-ad jufted Clock , corre&ed at Noon, by the Meri- 
L 1 1 2 dional 
