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Table of the Elliptic Motions of the Planets, as given by La Place in his Systeme du Monde, Troisieme Edition, 1808.

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Table of the Four New Planets, from the Same.

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The complete Planetarium, Tellurian, and Lunarium, all in brass; the box, ABC, plate 11, fig. 1, mounted on a pedestal with claw feet, and the instrument with all its appendages packed in a portable mahogany

case.

37 16 0

N. B. This instrument, by being divided into three parts, admits the various phenomena to be exhibited in a complete and perspi

cuous manner.

Portable Transit, plate 12, fig.3

.....

20 0 0

PLATE XIV.

Fig. 1 The simple Astronomical Quadrant or Angular
Instrument, all in brass, of about 4 inches radius, in

a case...

1 13

4 40

Ditto, with rack-work motions, telescopic sight, reflecting eye-piece to observe to the zenith, horizontal spirit levels, &c. packed in a pocket mahogany case.... For the representations and descriptions of portable, more simple, and less expensive Orreries, see the pamphlet entitled, The

Description and Use of a New Portable Orrery, by W. Jones; The Sixth Edition, 1812, price 3s. and sold as above.

Fig. 2, The Portable Equatorial or Universal Sun-dial, all in brass, the radius of the circles about 3 inches in diameter, in a case.....

An improved accurate Equatorial

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8 0 50

PLATE XV.

The Globes, as represented in the plate, are, according to the mode of mounting by G. Adams, the father of our late author, and according to the dimensions of 12 or 18 inches, and the quality of the frames, the pair, from 51. 5s. to...........

15 15 0For an account of the NEW BRITISH GLOBES, see the Advertisements prefixed to the Table of Contents of this Work.

AN INTRODUCTION TO PRACTICAL ASTRONOMY, or the Use of the Quadrant and Equatorial; selected from the Astronomical, &c. Essays, with 2 Plates, Price 3s.

ESSAYS ON THE MICROSCOPE, containing a particular Description of the most improved Microscopes; a general History of Insects; a Description of 379 Animalcula; a View of the Organization of Timber, and the Configurations of Salts when under the Microscope, &c. &c. Second Edition, by FREDERIC KANMACHER, in 4to, and illustrated by 33 Plates. Price 17. 16s. in boards. Reprinting by W. & S. Jones.

AN ESSAY ON ELECTRICITY, explaining clearly and fully the Principles of that curious and useful Science, 8vo. in Boards. AN ESSAY ON VISION, Third Edition, 8vo. in Boards.

GEOMETRICAL AND GRAPHICAL
ESSAYS.

Containing a general Description of the best and most approved
MATHEMATICAL INSTRUMENTS, in Geometry, Civil and Military
Surveying, Levelling, Perspective, Gunnery, &c. with many new
practical Problems, illustrated by 34 Copper-plates. By the late
GEORGE ADAMS, with Corrections and Improvements. By WIL
LIAM JONES, F. Am. P. S. Fourth Edition, 8vo.

LECTURES

IN

NATURAL AND EXPERIMENTAL

PHILOSOPHY.

In 5 vols. 8vo. the fifth Volume consisting of the Plates and Index, revised and corrected by the above Editor. Reprinting.

1812.

Glendinning, Printer, 25, Hatton Garden, London.

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