[ j ° 8 9 ] 
Furptt . Sundry papers relative to an accident from lightning at Purfleet,. p, 232* 
See Lightning . 
Putrefattion a principal fource of difeafe, p. 131. 
Pyrometry and Areometry . An effay on pyrometry and areometry, and on phylical mea- 
fures in general, p.419. Concerning* the meafure of the expanfion of folids by 
heat, p. 419—424. Principle on which is founded the comparative meafure of the 
expanfion of bodies by heat, p. 424—428. Defcription of an inftrument intended 
to find out the comparative expanfibilities of bodies by heat, p. 428— -434. Ap- 
plication of the method of finding the proportions between the expanfibilities of 
different matters by heat.— Determination of the relative expanfibilities of brafs and 
glafs, p. 434 — 468. Effay upon the meafure of the abfolute expanfion of bodies by 
heat, p 469 — 482. Obfervations upon phyfical meafures, p. 483 — 493. A practi- 
cal method of approximation in the determination of the co-effeCts of the fame 
caufes, p. 494—508. ProjeCt of a comparable areometer, p. 509 — 528. Conclu- 
fion with refpeCt to phyfical meafures in general, p. 528 — 5 46* Explanation of the 
figures in the above effay, p. 546—353. 
Or 
Quadrupeds not fo warm as fowls by fome degrees, p. 23—25. 
Quantities . .On the arithmetic of impofiible quantities, p. 318—343. 
Quarry. An account of the quarry at Unkle, p. 4, 5. Great quantities of bafaltic 
columns brought from thence, p. 2, 3. The court of the palace of the elector- 
palatine at Duffeldorff paved with a lava brought from thence, p. 2. 
Qua/s , a common drink in Ruffia, how prepared, p. 627, 628. Their manner of mak- 
ing a better fort, p. 628, 629. Remarks on it, p. 629, 630. 
Quickjiher 9 concerning its expanfion in meafuring heights with the barometer, p. 682, 
683. 
R. 
Rabbit, experiments on one relative to its heat, p. 23. Freezing the ears of rabbits 
with a view to fee if they would be reftored to the aClions of life when thawed, 
P* 34 > 35 - 
Radjas 9 freemen of the Cafiia country in Sumatra, an account of their burials, p. 167, 
168. 
Rain, abftratt of the barometer, thermometer, and rain, at Lyndon in Rutland, for the 
year 1777, p. 554. See Lyndon. Depth of rain at Hawkhill near Edinburgh, 
for the year 177 6, p. 566. Journal of the quantity of rain that fell at 
Holme near Mancnefter from 1765 to 1769; and at Barowby near Leeds from 
1772 to 1 77 7, p- 57L 57 2 * State of the rain for each month of the year 1777 
