[ *94 ] 
^uetn-iees produced from the common eggs, p. 28 — 30. The working-bees have the 
power of making a queen of any worm in the hive, p. 50, 31. The received opinion 
that the queen-bees are produced from a particular kind of eggs, erroneous, 
p. 31. 
Qnickfil<ver. An experiment to determine hydroftatically the fpecific gravities of air 
and quickfiiver, with a given temperature and preflure, and remarks thereon, 
p. 557 — 570. Expanfion of quickfiiver in the tubes of Mr. De Lucs barometer, rc- 
fulting from the Saleve obfervations, p.656 — 658. Experiments on the expanfon 
of quickfiiver, p.659 — 68 r. Rate of expanfion of a column of quickfiiver in the 
tube of a barometer, p. 6S2. Conftruclion and application of a table of equation, 
for the expanficn of quickfiiver in the tubes of barometers, p. 683 — 686. The 
equation to be applied to the obferved height of quickfiiver in the barometer, 
from 15 to 31 inches; and for differences of temperature extending to 102* of Fahren- 
heit; whereby the column is reduced to the height it would have ilood at in the 
temperature of 32 degrees, p. 687. The expanfion of common air does not keep 
pace with the dilatations of quickfiiver, p. 695. 
R. 
Rabbit's fkin, a coated phial may be charged with eleClrical fparks from one, fufficiently 
to pierce a hole through a card with its difeharge, p. 396. Smooth glafs rubbed 
with a rabbit’s fkin acquires electricity, p. 397. 
Rain. Defcription of an electrometer for the rain, p. 31, 52. No rain ever in the king- 
dom of Peru, p. 257. The quantity of rain falling not fo good a tell ot the ftate of the 
atmofphere as evaporation, p. 244, 243. A comparative view of the rain at Liver- 
pool during the years 1772, 177 3, 1774, and 1775, p. 247 — 250. Depth of the 
rain not a true index of the moifiure or drynefsof the atmofphere, p. 250 — 252. Why 
much rain gives no more moiilure to the atmofphere than a little, p.251. More 
rain falls than is raifed in vapour, fuppofing the whole to be a furface of water, p.254. 
Six times more defeends in rain than what is exhaled from the earth, ibid. How the 
rain is collected and reftored to the fources from whence it came, p. 234, 233. An- 
nual fall of rain between Lancafhire and Yorklhire, p. 235. Exceeds that of Liver- 
pool, ibid. The quantity of rain which fell at Lyndon in Rutland during the year 
1776, p. 330. What quantity fell in Briftol in the fame year, p. 354. State of the 
rain for each month in London, throughout the fame year, p. 358 — 381. Quantity 
which fell in each month, and in the whole year, p. 382. 
Rain-gage, wrong method of fixing it, p. 253. 
Rameljberg near Gollar, in the Hartz, method of working the lead-mines there, p. 414. 
Depth of mines there determined by barometrical obfervations, p. 417 — 419. 
436—440. 
Ram/den , Mr. defcription of his portable barometer, p. 638, 659. 
Rautnur , 
