c 10S4 3 
yLuilam, Rev. Mr. his obfervaucn of an eciipfe of the fun June 24, 1778, at Leicefter* 
p. 1019. 
‘Lyndon, Abftrad of a regifier ef the barometer, thermometer, and rain, at Lyndon in 
Rutland, for the year 1777, p- 554- State of the barometer, thermometer, and rain, 
for that year, ibid. Gbfervations on the weather, &c. during that year, p. 555, 55b, 
An account of the weather in the year 1725, p. 556, 5 ,7. Remarks thereon, 557, 558* 
Concerning the fowing of elms feed, p. 558. 
Me 
Mac bride, Mr. David, his improved method of tanning leather, p. it I. See Leather . 
M'Gouan, his extract of meteorological obiervations made at Hawkhili, near Edinburgh* 
p. 564. See Meteorological Obfervatians . 
Machine . Defcription of one, for determining the force of fired gun-powder, and the 
velocity of cannon balls, p. 56, 57. Defcription of a machine to (hew the different 
effeds of points and balls at the upper terminations of condudors to fecure houfes, 8cc% 
from lightning, p. 155, 136. Experiments with it, fhewing that points anfvver the 
purpofe better than bails* p. 156— 159. Defcription of the machines ufed in new ex- 
periments on the nature. and ufe of conductors, p. 247—234. Meafurements, 8tc. of 
them, p. 3.1 1—3130 Defcription of the Eledrophorus, p. 1027, 1028. Great ufes 
of it, p. 1028—1031. Ledure concerning it, p. 1032 — 1048. An account of the 
advantages of a newly invented machine much varied in its effeds, and very ufeful for 
determining the perfed proportion between different moveables ading by levers and 
wheel and pinion, p. 930 — 998. 
Maclaurm , his opinion concerning the laws of motion, p. 351. Remarks thereon, p» 
351, 352. 360, 361. 
Madeira, ifland of, the proportionable number of inhabitants that die there annually* 
P* * 54 - 
Madrafs Read , journal of a voyage to it, p. 391—416. 
Magazines of powder, points at the upper terminations of condudors to fecure them from 
lightning, more ufeful than balls, p. 1 95— 1 99* Rounded condudors fecure them 
again!! the effeds of lightning better than pointed ones, p. 24 *, &c. Pointed con- 
dudors recommended as the mod eifedua! for this purpofe, p. 314— 317. Farther in- 
quiries refpeding fharp and blunt condudors, p. 8oi — 8 0. 823 — -85^. 853—860. 
999 — 101 1. 
Mahon, Charles Lord Vifcount, defcription of his moft efFedual method of fecuring build- 
ings againil fire, p. 88 j. i>ee Fire. His letter concerning Mr. Le CerPs inRruments 
for determining the perfed proportion between different moveables ading by levers and 
wheel and pinion, p. 950, 951. 
Males not fa. long-lived as females, p. 144* 
Han't 
