INDEX. 
Eleffricity, continues longer upon Silk than Yarn, 439, 
p , 169. 
Eleutheria Cortex, «. 441, p. 255. 
Ellicott (John) an Inftrument for meafuring the Expanfion of 
Metals by Heat, n. 443, p. 297. 
Elton (John) his Quadrant, n. 442, p. 280. 
F. 
Figures Arabian or Indian , when firft ufed in England for 
Numbers, n. 439, p. 119, 120, 126. 
~ — - — their Antiquity and Ufe, n. 439, p. 13 1. 
* their Rife, n. 439, p. 124, 126. 
— what ufed by the Greeks and Romans , n . 439, 124, 
*35- 
K//n, Lapidis Mexicani Examination &c. ». 438, p. 106. 
Fiflula Lacrymalis, fome Thoughts on it, by Dr. Hunauld> 
*\437> I- 54- 
Fluxions , Sir If aac Newton of them, 443, p . 320. 
(Martin) of the Standard Meafures in the Capitol at 
Rome, n . 442, p. 262. 
Foot , the Gra£ an & Roman, n. 442, yr. 263. 
Foramen Ovale , open in an Adult, 439, p . 172. 
Forth (Henry) concerning the Storm on 8. 173 4-5. 
442, 285. 
G. 
Obfervatioris on an ancient Roman Chiro- 
graph, or Conveyance of Part of a Sepulchre, n* 4.4. i, 
jP. 212. 
Geoffrey ( Claud. Jof ) of Mr. Seignette’s $0/ Polychreftus Ru - 
pellenfis , &c. zz. 436, 37. 
Gerjlen ( Chriftian-Ludov. ) his Arithmetical Machine^ and 
its Ufe, w. 438, p. 79. 
Gourdon (Sir Robert) a Receipt to cure mad Dogs, 443, 
^ 360. 
Gravity. % its Variation on the Surface of the Earth, n. 438, 
p. 98, 
Gray (Stephen) Experiments relating to Electricity, n. 4 36, 
p, 16, 439, p, 1 66, ^444,^,400, 
6^47 
