[ 8 So 2 
Lin/eed-oil , the thick fcum from its furface a very firong negarive elciftiic, p. 97, n. 
Lions, and other beads of prey, frequently feen in Africa, p. 39, 40. 
Liverpool, obfcrvations on the annual evaporation there 3 and on evaporation confidercd 
as a ted of the moifture or drynefs of the atmofphere, p. 2^4. See Evaporation . A 
comparative view cf the rain at Liverpool during the years 1772, 1773, J 774 > an£ ^ 
I 775 >P ,2 47 — 2 5 0, ^ comparative view of the winds there during the fame time, ibid. 
A comparative view of the temperature of the air there during the fame time, ibid. 
London . The annual evaporation there, p.232. Exceeds that at Liverpool, ibid. 
Meteorological journal for the year 1776, kept at London, p. 357 — 384. See Tables. 
Computations of barometrical obfervations made on heights in and near London, 
P* 773 - 
Longitude. Concerning the difference of longitude at Paris and Greenwich, refulting 
from the eclipfes of Jupiter’s firll fatellites, obfervcd during the lait ten years 3 with a 
comparative table of the correfponding obfervations of the firll fatellite, made in the 
principal obfervatories, p. 162 — 186. 
Lyndon , in Rutland, extradl of a regilter of the barometer, thermometer, and rain, kept 
there, for the year 1776, p. 350. State of the barometer for that year, ibid. Of the 
thermometer within and without, ibid. The quantity of rain which fell, ibid. A ge- 
neral account of the weather during that year, p. 351, 352. 
M. 
Machines . Of the degrees and quantities of winds requifite to move the heavier kinds 
of wind machines, p. 493 — 303. Experiments and obfervations on Mr. Volta’s 
elettrical machine, p. 116 — ti8. Experiments on his machine for exhibiting per- 
petual eledlricity, p. 389 — 392. An experiment with a piece of dry and warm 
flannel tied round the globe of an ele&rical machine, p. 397, 398. 
Mackenzie , Dr. his account of a woman living without food or drink, p. 1. See 
Woman « 
Mac Leod , Janet, the fading woman in Rofs-fhire, her cafe, p. 1 — 1 1. 
Magnitudes . The general mathematical laws which regulate and extend proportion 
univerfally ; or, a method of comparing magnitudes of any kind together, in all the 
poflible degrees of increafe and decreafe, p. 450. The reafoning of geometers 
with refpeft to proportional magnitudes very confined, p. 450, 451. An inveftigation 
concerning it, p. 431 — 437. 
Male organs cf generation, fome refemblances of them in drones, p. 18. 
Manatee , one taken alive by the fea-fide in Africa, p. 40. 
Manometer. Experiments on the expanfion of air in the manometer, p. 689 — 696. 
Thermometrical fpaces compared with thofe of the manometer, p. 697. Experiments 
for determining the actual expanfion of common air in the manometer afle&ed by the 
heat of 2 1 2®, p. 698 — 715. 
7 
Maraidty 
