THE

EDINBURGH

PHILOSOPHICAL JOURNAL.

July 7, 1944

THE

EDINBURGH

PHILOSOPHICAL JOURNAL,

EXHIBITING A VIEW OF

THE PROGRESS OF DISCOVERY IN NATURAL PHILOSOPHY,
CHEMISTRY, NATURAL HISTORY, PRACTICAL MECHANICS,
GEOGRAPHY, NAVIGATION, STATISTICS, AND THE FINE
AND USEFUL ARTS,

PRINTED FOR ARCHIBALD CONSTABLE & CO. EDINBURGH,
AND HURST, ROBINSON & CO. LONDON.

OF

No. XIX.

Page

ART. I. Remarks on the Influence of Magnetism on the Rates of

Chronometers. By GEORGE HARVEY, Esq. M. G. S.

M. A. S., &c. &c.

II. Description of the Whirlwind at Scarborough on the

24th June 1823. By JOHN DUNN, Esq. Fellow of

the Royal College of Surgeons, London,

III. Observations on the Heights of the Himalaya Moun-

tains, with the Measurements of Lieut. A. Gerard,

and Mr J. GERARD. BY WILLIAM LLOYD, Captain

of the Bengal Army,

1

11

18

Corrected TABLE of the Heights of the Snowy Peaks of the

Himalaya Mountains,

21

IV. Observations on Bees, and particularly on the conver-

sion of the Larvæ of Working-Bees into Queen-Bees.

By the Reverend Mr DUNBAR of Applegarth,

V. On the Refractive and Dispersive Power of different

Species of Glass, in reference to the improvement of

Achromatic Telescopes, with an Account of the Lines

or Streaks which cross the Spectrum. By Joseph

FRAUENHOFER of Munich. Concluded from Vol. IX.

p. 299.

22

26

VI. On Rock Formations. By Baron ALEXANDER Hum-

BOLDT,

40

VII. Description of a simple, cheap, and accurate Method of

experimenting on small quantities of Gases, by means

of Bent Tubes. By Mr WILLIam Kerr,

VIII. Account of the Earthquake which happened in Chili,

on the 19th of November 1822,

53

56

IX. Account of two Maps of Zænmæ or Yangoma. By

FRANCIS HAMILTON, M.D. F.R.S. & F.A.S. Lond.

& Edin. With a Plate,

59