Serpentis,
Polaris,

Octohedron, the most common form of crystallized bodies,
Olive oil, concretions of it found in the human intestines,

P

150

PEARSON, GEORGE, M. D. On the colouring matter of the
black bronchial glands, and of the black spots of the lungs, 159
POND, JOHN, Esq. Astronomer Royal. His observation of the
suminer solstice of 1812, at the Royal Observatory,

His catalogue of north-
polar distances of some of the principal fixed stars,
His observation of the
winter solstice of 1812, with the mural circle at Greenwich,
His catalogue of north
polar distances of eighty-four of the principal fixed stars,
deduced from observations made with the mural circle at
the Royal Observatory,

27

75

123

280

Observations of the sum-

mer solstice of 1813, with the mural cirele, at the Royal
Observatory,

304

PRECHTL, M. His theory respecting various crystalline forms
referred to,

Prisms, hexagonal, origin of their form in crystallography,

R

Rhea Americana, description of its solvent glands and gizzard,
Rhomboid, obtuse, origin of its form in crystallography,

S

Sheep, on a new variety in their breed,

80

57.

Sight, observations relative to the near and distant sight of
different persons,

88

31

·

SMITHSON, JAMES, ESQ. On a substance from the elm tree
called ulmin,

64

SMITHSON, JAMES, ESQ. On a saline substance from Mount
Vesuvius,

page

256

27

observation of that of 1813, at the Royal

298

123

Solstice, summer, observation of that of 1812, at the Royal
Observatory,

Observatory,

winter, observation of that of 1812, with the mural
circle at Greenwich,

Spheres, perfect, supposed to be the elementary particles of
fluor spar and such other substances as assume the ecto-
hedral and tetrahedral forms,

Squalus Maximus additions to an account of its anatomy con.
tained in a former paper,

Stars, principal fixed, catalogue of north polar distances of

some of them.

54

227

75

catalogue of north polar distances of

281

80

eighty four of them,
Struthio Camelus, description of its solvent glands and gizzard,
Sulphuret of carbon, or Alcohol of sulphur, experiments on it, 171

experiments to determine the proportions

of sulphur and carbon contained in it,

182

comparison of the proportions of sulphur,

and carbon in it, with those which might be inferred from
the laws of determinate proportions,

189

experiments on its combination with the

the alkalies, the earths, and the metallic oxyds,

192

experiments to determine the nature of a
particular substance produced by the action of nitro-mu-
riatic acid upon it,

experiments on the production of cold
by the evaporation of it,

195

252

T

Tetrahedron and octohedron, relation of these solids to each
other in crystallography,

51

TRIMMER, MR. WILLIAM KIRBY. His account of some
organic remains found near Brentford, Middlesex,
TYCHO L. TYCHONIUS. His account of a narwhale's skull,
published in 1706, referred to,

131

127

U

Ulmin, on a substance from the elm tree, so called,

64

Ulmin, English, experiments on it,

Vesuvius, Mount, on a saline substance from it,

page

68

256

Vision, an appendix to Mr. WARE's paper on that subject,
Vitreous humour, its absorption probably the cause of amended
vision in old persons,

110

42

W

WARE, JAMES, Esq. His observations relative to the near
and distant sight of different persons,

Wires, on a method of drawing them extremely fine,
WOLLASTON, WILLIAM HYDE, M. D. Bakerian lecture, on
the elementary particles of certain crystals,

freezing at a distance,

31

114

-

-

51

On a method of

71

Method of drawing

Page 175, line 13, for one-fourth-read one-third

17, for preponderates over that of either the olive oil or phosphorus---
read be exceeded by that of the alcohol of sulphur.

10, after attraction of-add the azote of

23, for produced-read produced, and dele the comma after portion
11, før 261.—read 268.

18, for the other-read the other of which

15, for bases,-read basis

11, for metal, positively electrified-read metal positively electrified,

From the Press of
W. BULMER & Co.
Cleveland-row, St. James's,

London.