618 INDEX. 
GEORGIUM SIDUS, the orbit and motion of the, 
determined directly from observations. P.C. i. 305. 
GIBRALTAR, mineralogical description of the moun- 
tains of. P. C. iv. 191. 
GIESECKE (SIR CHARLES), on the mineralogy 
of Disko Island. ix. 263. 
GLASS, description of a new darkening, for solar ob- 
servations. Sir D. Brewster. viii. 25. 
on the laws which regulate the distribution 
of the polarizing force in plates, tubes, and cylin- 
ders of. viii. 353. 
GLAUBERITE, account of a remarkable peculiarity 
in the structure of. xi. 273, 
GLENIE (JAMES), on the principles of the ante- 
cedental calculus. P. C. iv. 65. 
a geometrical investigation of some curious 
and interesting properties of the circle, &c. vi. 21. 
GLEN TILT, observations upon some geological ap- 
pearances in. vii. 803. 
GOLD, some experiments on. xi. 23. 
GORDON (DR JOHN), additional communications 
respecting the blind and deaf boy. vili. 129. 
GOTHIC ARCHITECTURE, on the origin and prin- 
ciples of. L. C. iy. 3. 
GRAHAM (REV. DR PATRICK), aurora borealis 
observed in daylight. H. v. 7. 
GRAHAM, A. M. (THOMAS), on the influence of 
the air in determining the crystallization of saline 
solutions. xi. 114. 
an account of the formation of alcoates, de- 
finite compounds of salts and alcohol, analogous 
to the Hydrates. xi. 175. 
on the law of the diffusion of gases. xii. 222. 
on phosphureted hydrogen. xiii. 88. 
on water as a constituent of salts. xiii. 297. 
GRAMPIAN MOUNTAINS, a description of the 
strata of the. vi. 3. 
GRANITE, observations on the formation of. H. iii. 8. 
observations on. P. C. iii. 77. 
GRAVEL, on the use of caustic alkali in the cure of 
gravel. H. ii. 22. 
GREEK LITERATURE IN ITALY, introduction to 
an inquiry into the revival of the. x. 389. 
GREEN (GEORGE), researches on the vibrations of 
pendulums in fluid media. xiii. 54. 
GREENFIELD (WILLIAM), on the use of negative 
quantities in the solution of problems by algebraic 
equations. P. C. i. 131. 
GREENOCK, C. B., LL. D. (MAJOR-GENERAL 
LORD), on the igneous rocks in the neighbour- 
hood of Edinburgh. xiii. 39. 
general remarks on the coal formation of the 
great valley of the Scottish Lowlands. viii. 107. 
GREGORY (DR JAMES), theory of the moods of 
verbs.. L. C. ii. 193. 
GREGORY (DR JAMES CRAUFURD), notice con- 
cerning an autograph manuscript by Sir Isaac New- 
ton. xii. 64, ; 
GREGORY, M. D. (WILLIAM), on the composition 
of the petroleum of Rangoon, with remarks on pe- 
troleum and naphtha in general. xiii. 124. 
GRIEVE (DR JOHN), an account of the method of 
making a wine called, by the Tartars, Koumiss; with 
observations on its use in medicine. P. C. i. 178. 
GROOMBRIDGE (S.), comparison of the north polar 
distances of thirty-eight principal fixed stars, on 
the 1st January 1800. vii. 279. 
GUIANA, observations on the natural history of. 
P. C. iv. 41. 
GUTHRIE (DR MATTHEW), dissertation on the 
climate of Russia. P. C. ii. 213. 
HAIDINGER (WILLIAM), remarks concerning the 
natural-historical determination of diallage. x. 127. 
on the forms of crystallization of the mineral 
called the sulphato-tri-carbonate of lead. x. 217. 
description of fergusonite, a new mineral spe- 
cies. x. 271. 
on the determination of the species, in mine- 
ralogy, according to the principles of Professor 
Mobs. x. 298. 
description of sternbergite, a new mineral 
species. xi. 1. 
on the parasitic formation of mineral species. 
xi. 73. 
mineralogical account of the ores of Man- 
ganese. xi. 119. 
HAIL, notice respecting a remarkable shower of, 
which fell in Orkney on 24th July 1818. ix. 187. 
HALL (CAPTAIN BASIL), account of the structure 
of the Table Mountain, and other parts of the 
Peninsula of the Cape. vii. 269. 
HALL (SIR JAMES), observations on the formation 
of granite. H. iii. 8. 
on the origin and principles of Gothic archi- 
tecture. P. C. iv. 3. 
experiments on whinstone and lava, vy. 43. 
on the effects,of compression in modifying the 
action of heat. vi. 71. 
on the vertical position and convolutions of 
certain strata, and their relation with granites. vii.79. 
on the revolutions of the earth’s surface. 
vii. 189. 
on the consolidation of the strata of the earth. 
x, 314. 
HALL (WILLIAM), account of a variety of the 
bramble. H. iii. 20. 
account of a singular halo of the moon. 
P. C. iv. 174. 
HAMILTON (DR FRANCIS), some notices con- 
cerning the plants of various parts of India. x. 171. 
on the structure of the fruit in the order of 
Cucurbitacese. xi. 229. 
HAMILTON (DR ROBERT), account of a distem- 
. per, by the common people in England oe, 
called the mumps. P. C. ii. 59. 
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