'646 H A L 
Halley, Edmund, Some remarks on the varia- 
tions of the magnetical comoals, publilhed in 
the Memoirs of the Academy of Sciences, with 
regard to the general chart of thofe variations 
made by Halley ; as alfo concerning the 
Tranf. 
Abricfg. 
longitude of the Magellan Straights 
XXIX 165 
Iv 453 1 
fT-H. Obfervations on the total eclipfe of the Sun, 
on the ;22d of. April, 1715 
— 245, 314 
— 255 
— Account of the caufe of the faltnefs of the 
ocean, and of the feveral lakes that emit no 
rivers, with a propofal, by help thereof, to 
difeover the age of the world 
— 296 
V 2 216 
A fhort hiftory of the feveral new flars that 
have appeared within thefe 15© years ; with 
an account of the return of that in Collo 
Cygni, and of its continuance obferved in 
1715 - - : 
— 3^4 
IV 224 
» An account of feveral nebulae, or lucid fpots, 
like clouds, lately difeovered among the fixed 
flars, by help of the telefcope 
w— An account of the late furprizing appearance of 
lights feen in the air on the 6tb of March, 
1715-16, with an attempt to explain the prin- 
1 
to 
O 
— 225 
cipal phenomena thereof 
— - Of the fame feen on the ocean, near the coaft 
of Spain, with an account of the return of the 
fame fort of appearance on March 31, and 
— 406 
tV 2 138 
April 1 and 2 
* A particular method by which the parallax of 
the Sun, or its diftance from the earth, may be 
afeertained by the afliftance of the tranfit of 
— 43 ° 
— - 151 
Venus over the fun 
— — Account of the caufe of the late remarkable ap- 
pearance of the planet Venus, leen this fum- 
— 454 
IV 214 
mer for many days together in the day-time 
■ ■ The art of living under water ; or a diicourfe 
concerning the means of furnifhing air at the 
— 466 
— 300 
bottom of the fea, in any ordinary depths 
— — — Obfervations on the Moon’s appulfes to the 
— 492 
i V 2 188 
Pleiades in the three next years 
— An account of a fmall telefcopical comet feen at 
XXX 692 
IV 298 
London on the 10th of June, 1717 
■ Confiderations on the charige of the latitude 
— 721 
— 344 
of fome of the principal fixed flars 
.»■ An account of the extraordinary meteor feen all 
over rmgland, on the 19th of March, 1718 9, 
2 
— 73 6 
— 227 
with 
2 
