LIG 
je£t an what proportion one pleafeth, and of 
the diflances requifite to burn bodies by the fun 
» - Auzuot 
A method by which a glafs of a fmall piano-con 
vex fphere may be made to refradt the rays of 
light to a focus of a far greater diftance than is 
uftial “ Hock 
— Letter containing his new theory of light 
and colours - - Newton 
Some experiments propofed in relation to 
Mr. Newton’s theory of light, with obferva- 
tions thereon by - Newton 
Letter of animadyerfions upon I. Newton’s 
theorv of light - - Pardies 
Anfwer - - Newton 
A feries of queries to be determined by ex- 
periments, pofitiveiy and diredtly concluding 
his new theory of light and colours. Newton 
Second letter to Mr. Newton’s anfwer to his 
fir ft letter - - Pardies 
Anfwer ■- - Newton 
Anfwer to feme confederations on his dodtrine 
of light and colours - Newton 
Confederations upon Mr. Newton’s dodtrine 
of colours, -as alfo upon the eifedts of the 
different refradlions of the rays in telefcopical 
glaffes in a letter from Paris - Anon 
Anfwer further explaining his theory of light 
and colours, and particularly that of whitenefs, 
together with his continued hopes of perfecting 
telefcopes by reflection rather than refradtion 
» » ~ Newton 
Letter concerning the number of colours, 
and the neceflity of mixing them for the 
pradudtion of white, as alfo touching the 
caufe why a picture call by glaffes into a 
darkened room appears fo did i net notwiths- 
tanding its irregular refraction, being an imme- 
diate anfwer to that from Paris - Newton 
An anfwer by the fame Parifian philosopher 
A letter animadverting upon Sir ifaac New- 
ton’s theory of light and colours Linus 
Anfwer - - Newton 
A letter, being a reply to the letter printed vol. 
X, 219. by way of anfwer to the former letter 
of Mr. Linus concerning Newton’s theory 
Tranf. 
Abridg. 
I 68 
I 280 
I 202 
1 1 93 
VI 307s 
— 128 
VII 4059 
— l 3 S 
— 4087 
— 4091 
— i37 
— 139 
VII 5004 
— 197 
— 5012 
— 5°I4 
— 5084 
— 141 
— 142 
— 144 
— 202 
VIII 6086 
— 1 56 
— 6087 
— 158 
— 6108 
— 6112 
— IC7 
— 158 
X 217 
- 2 f-8 
I l6l 
of 
