( 348 ) 
Phafis of 6 digits , the Semidiameters appear’d equal. Thefe my 
Obfervations,if you think them worthy, you may communicate 
to other Mathematicians.The laft year 1665. July 27. (ft. n.Jthe 
T zbles did alfo indicate an Eclipfe of the Moon : but though the 
Sky here was very cleer, yet the Moon was not at all obfcured. 
by the true fljadow 0 but entred only a little into the Penumbra 
wherein it continued .50'. The beginning of its touching the 
Penumbra did then almoft happen, when Aquila was elevated 56° 
18' 3 which is an Example worthy to be noted. I have many Ob- 
fervations of the Edipfes of former years by me, which I could 
not yet make publick, by reafon of the multitude of my bufineft, 
which do almoft over-whelm me. The Eclipfe of the Moon of 
this Year 1666. June 16. (ft. n m ) was obferved from a Hill neer 
my Garden, to the end,that we might fee both together the Suns 
fitting#. ind the Moon rijing. But I was difappointed of my hopes r. 
For very thick Exhalations, befieging the Horizon , where the 
Moon was to rife, unto 2°. 3p',hindred me from feeing the Moon 
rife's in the Article of the Jetting of the Sun. Wherefore the firfi 
Phafis of 1. dig. 45'. did not appear but in the Moons Altitude of 
2°. 30'$ when the greateft Obfcuration was already paft.The End 
fell out hbr. 9. 27k about 128° from the Zenith Weft ward. 
I am very glad to underftand , that you have fo good Te- 
lefiopes , as to make fuch confiderable Obfervations in Jupiter 
and Mars , as you have lately done in England. I have no 
leafure now, by reafon of the Obforvations of theFixt Stars, 
which i now almoft conftantly am employ’d about , to do any 
thing in the advancing of Telejcopes. I am obliged to finiih the 
Catalogue of the Eixt Stars 5 having mean while the content- 
ment to find , that many excellent perfons labour about the 
Improvement of OpticI^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 3 perhaps may I be fo hap- 
py , as to make likewife fome good difcovery or other , by the 
help thereof. In the mean time , let me know , I pray , the 
Dimensions of thofe Glafles , and how they are to be managed. 
The ingenious Burattini has not yet finijht his Telefcope 3 as foon 
. ' as 
