*88 
TEL 
{cope ; together with his table of apertures and 
charges for the feveral lengths of that inftru- 
ment - - Newton 
Anfwerto Tome objections made by an inge- 
nious French phiiofopher, to the new reflect- 
ing telefcope - Newton 
Some confiderations upon part of a letter of M 
de Berce, concerning the catadioptrical tele- 
fcope, pretended to be improved and refined 
by M. Caflegrain - Newton 
Telescopes. The efFeCts of the different refractions 
of the rays in telefcopical glafles Anon 
Hopes of perfecting telefcopes by reflections 
rather than refractions - - Newtcn 
The ufe of telefcopic fights in aftronomical 
ebfervations - Heveiius 
— A fure and eafy way to make all forts of great 
telefcopical glafles, with a generous offer of 
furnifhing induftrious aftronomers with them 
Bore Hi 
— Letter about the price of his telefcopes Borelli 
~~ — - The defcription of an aerid telefcope Hugen • 
A dioptrick problem, why four convex-glafles 
in a telefcope fhew objeCts ereCt Molyneux 
ExtraCis from Mr. Gaf oigne’s and Mr. Crab- 
tree’s letters, proving Mr. Gafcoigne to have 
been the inventor of the telefcopick fights of 
mathematical inftruments, and not the French 
Derham 
— A way for myopes to ufe telefcopes without 
e.ye glafles, an objeCt glafs becoming as ufeful 
to them, and fometimes more, than a combi- 
nation cf glafles • Defaguliers 
.. . Some remarks upon the method of obferving 
the differences of right afcenfion and declina- 
tion, by crofs hairs in a telefcope Halley 
— — - An account of a catadioptrick telefcope made by 
John Hadley, Efq. with the defcription of a 
machine, contrived by him, for applying it to 
ufe - - - Hadley 
■ — A letter concerning obfervations made with 
Mr. Hadley’s reflecting telefcope Pound 
Obfervations on the fatellites of Jupiter and 
Saturn, made with the fame telefcope Hadley 
A new method of improving and perfecting cata 
dioptrical telefcopes by forming the fpecuiums 
©f giafs inftead of metal - Smith 
XXX 603 
1017 
XXXI 
11 
XXXII 303 
*— 382 
— 3 8 5 
XLI 326 
Tranf. 
Abridg. 
— 4 ° 3 2 
— 200 
— 4034 
— 20i 
— 4056 
> — 204 
VIII 6086 
— 156 
— 6087 
> 158 
IX 27 
— 221 
XI 6qr 
— *95 
XU 1005 
— 195 
XIV 668 
XVI 169 
— 189 
IV 345 
— 188 
VI 165 
VI 221 
VIII 113 
T EL£> 
