(348) 
Thajls 0(6 digits^thQ Semidiameters appeared equaK Thcfe my 
obfervations, if you think them worthyj you may communicate 
to other Mathematicians^Thelaft year 16^5. Ja/y 27. (/?.».) the 
Tables did alfo indicate an Ech'pfe of the Moon : but though the 
Sky here was very cleer, yet the Moon was not at all obfcured 
by the true Jbadow, but entred only a Httle into the Penumbra , 
wherein it continued 50'. The beginning of its touching the 
P^w^^m^r^did then a!moft happen,when^5^i:^/7<« was elevated 56* 
i 8'i which is an Example worthy to be noted. I have many Ob- 
fervations of the Ecltpfes of former years by me, which I could 
not yet make publick,by reafon of the multitude of my bufinefs, 
which do almoft over-whelm me. The Eclipf^ of the Moon of 
this Year 1666, June 16, { fi, n. ) was obferved from & Hill ncer 
my GardeUgto the end that we might fee both together the »S*«/i/ 
fettingym^d the Moon rzfing.But I was difappointed of my hopes : 
For very thick Exhalations, befieging the f^orit^on, where the 
Moon was to rife,unto 2°. 5 o 3 hindred me from feeing the Jkfoon 
rife^in the Article of the fe^mg of the Sun. Wherefore the firft 
Tbafis oi iJig.j^$\ did not appear but in the of 
a*^. 30'; when the greateft Obfcuration was already paft. The 
end fell out hor. 9. 27*, about iiS^* from the J^nith Wc&^ 
ward. 
I am very glad to underftand, that you have fo good Tele» ^ 
ftopes , as to make fuch confiderable Obfervations in Jupiter 
and yl/^rx, asyou have lately done in England^ I hare no 
Icafure now, by reafon of the Obfervations of the Fixt Stars, 
which I now afmoft conftantly am employed about^ to do any 
thing in the advancing of Jelefcopes, 1 am obliged to finifti the 
Catalogue of the Fixt .y^^in; having mean while the content-^ 
meat to find , that many excellent perfons labour about the 
Improvement of Opttck GlaJJes. If I could get a good one of 
thofe of 60. foot you mention ^ at a reafonable rate , you 
would oblige me in fending me one ^ perhaps I may be fo hap- 
py 5 as to make likewife fome good difcovery or other, by the 
jielp thereof In the mean time let me know^ I pray , the 
Dimenfions of thofe GlafTes, and how they are to be managed. 
1 he iiigenious Burattini has not yet finiiht his Telefcepe 5 as ioon 
as. 
