INDEX. 523 
Lyfons, Dr. 6F Gloucefter, letter to Dr. Nicholls on a cafe 
of three pins fwallowed by a girl, and difcharged at her 
fhoulder, p. 19. 
M. 
Macclesfield^ the Earl and Countefs of, obferve the tranfic 
of Venus at Shirburn-caftle, p. 173, 174. 
Machirit Mr. indicates a law of motion in bodies, defledled 
by two forces diredled to two fixed points, p. 75, 76. 
Madeira, life of the inhabitants more fettled than in Lon- 
don, p. 1 12. Doubles its inhabitants in 84 years, 
p. 120. , 
Mammout, fabulous animals of Siberia, p. 127. 
Majkelyne, Mr. communicates the eclipfes of Jupiter’s firft 
fatellite, the eclipfe of the Moon, and the occultations 
of fixed ftars by the Moon, obferved at Greenwich in 
1769, p. 399. See Afironomer Royal, 
Mayer, Profeffor Andrew, his obfervation of the tranfit of 
Venus at Gryphifwalde, p. 284. 
Mercury, vanfit of, over the Sun in 1743, obferved in 
New England by Profeffor Winthrop, p. 505. 
Mejfier, Mr. his account of two remarkable aurorae boreales 
at Paris, p. 86. Obferves the tranfit of Venus at Paris, 
p. 376. Aftronomical obfervations made and commu- 
nicated by him, p. 454. 
Metallic communication, from the croffes or weather- 
cocks of fteeples down to the ground, neceffary to pre- 
ferve them from injury by lightning, p. 163. 
Meteorological obfervations at Plymouth, p. 81. At 
Bridgwater, p. 155, 156. At Ludgvan in Cornwall, 
p. 157 — 159. 
Mirrors, cauftic, made at Drefden, p. 4. Their conftruc- 
tion, ibid. Their dimenfions, p. 5. Their effeds, 
p. 6, 7, 8. 
Moivre, Mr. Abraham De, his hypothefis on the equal 
decrements of human life, p. 90, 91* 
X X X 2 Monkies, 
