I IS U A. 
the year, p. 185. Their incrcafc by fuccefTive genera- 
tions, p, 186, 187. No males but in the lad brood, 
p. 188. Their copulation, 190, 19 1. Produce of 
their eggs, p. 192. Their prodigious fecundity, 
P* 193- 
'^Atergatis^ a Phoenician deity, p. 346. The fame with 
Dagon, ibid. 
Athens^ no copper coined there before the end of the Pe- 
loponefian war, p. 469. Coined no gold, p. 471. 
Attic drachm, heavier than the denarius, p. 463. 528. 
Was both a piece of money and a weight, p. 468. Was 
the mod famous for finenefs and judnefs, p. 469. Its 
weight, p. 480. 483. Its worth, p. 523. Lowered 
when Greece was reduced by the Romans, p. 530. 
Atra5Hon and repulfion of electrified bodies accounted for, 
P- 653* 
As^ Etrufcan, druckat Volaterra, p. 85, 86. 
As^ Roman, its value, p. 519. 
Avernus^ the lake, had formerly a communication with the 
fea, p. 28. Fills the bottom of the crater of a moun- 
tain produced by explofion, p. 32. 
Aureus^ Roman, erroneoufly fuppofed double the weight 
of the Denarius, p. 464. Its real weight, p. 502. 
Aurum Mofaicum^ a preparation of tin defcribed by Mr. 
Woulfe, p. 114, 115. 
B. 
Babylonian talent, .its weight, p. 488. 
Barbara or Gauro, a mountain formed by an eruption, 
p. 31. • 
Barkery Thomas, Efq-, obfervations on the quantities of 
rain at Lyndon in Rutlandfhire, p. 221. 227, &c. 
Barrington, Hon. Daines, perfids in his opinion about the ' 
chefnut trees, p. 167. A new obfervation of his ort 
that fubjeft, p. 168. Account of a new niolc from 
North America, p. 292. Account of experiments 
made 
