C loii ) 
being brought nearer to the diftin^t Bafe of the Ob- 
ject Glafs ; and an Eye lefs Convex, the office of a 
lefs Convex Eye-Glafs : but with this difference, that 
the more Convex the Eye is, the eafier may any part 
of the Objed be found, and the larger and more 
lucid it will appear. 
I have feen Sattirns Ring very plain with an Ob- 
jcd*GIals of little more thart fix Foot Radius^ without 
an Eye-Glafs. 
I have alfo found out a way for the Prefb'jtx to 
make ufe of an Objed-Glafs, by placing their Eye 
nearer the Lem than its Focus^ by fb much as their Eye 
is flatter than a common Eye, fo as to make ( as it 
were) the Telefcope of GaliUo ; the fiat Eye ferving 
as a common Eye arm’d with a Concave Lem. I have 
fo fixed the Telefcope, as to make a Prefbjta read at a 
great diftance a fmall Print. The truth of this may 
be eafily demonfirated, if it be requir’d. 
If this Experiment be made at bea with a very large 
Tube, big enough to put in the Head and move it 
about, and the ObjedGia.fs be alfo large, it may not 
perhaps be difficult to obferve the Eclipfes of the 
Satellites of Jufiter^ which I would recommend to the 
Confideration of thofe that would try for the Longi* 
rude by fuch like Obfervations. 
VI. “Hew and accurate Tables for the ready Compu^ 
ting of the Eclipfes of the firft Satellite of Ju- 
piter , by Addition only. <By the Reverend 
Mr James Pound, R. S. S. 
I N ISumb. 2iq. of thefe TranJaSfions, for the Months 
of tLovem and Decern. 1694. exhibited an Epi- 
tomy of Mt.Caffims curious Tables then newly pub- 
9 S ^ liflied. 
