# Scientific Memoirs/2

SCIENTIFIC MEMOIRS,
SELECTED FROM
THE TRANSACTIONS OF
FOREIGN ACADEMIES OF SCIENCE
AND LEARNED SOCIETIES,
AND FROM
FOREIGN JOURNALS.
EDITED BY
RICHARD TAYLOR, F.S.A.,
FELLOW OF THE LINNÆAN, GEOLOGICAL, ASTRONOMICAL, ASIATIC, STATISTICAL,
AND GEOGRAPHICAL SOCIETIES OF LONDON; HONORARY MEMBER OF THE NATURAL HISTORY SOCIETY OF MOSCOW.
UNDER SECRETARY OF THE LINNÆAN SOCIETY.
VOL. II.
LONDON:
PRINTED BY RICHARD AND JOHN E. TAYLOR,
SOLD BY LONGMAN, ORME, BROWN, GREEN, AND LONGMANS; CADELL; RIDGWAY AND SONS; SHWERWOOD, GILBERT, AND PIPER; SIMPKIN AND MARSHALL; B. FELLOWES; S. HIGHLEY; WHITTAKER AND CO.; AND J. B. BAILLIERE, LONDON:—AND BY A. AND C. BLACK, AND THOMAS CLARK, EDINBURGH; SMITH AND SON, GLASGOW:—MILLIKEN AND SON, AND HODGES AND M'ARTHUR DUBLIN:—DOBSON, PHILADELPHIA:—AND GOODHUGH, NEW YORK.
1841.
"Every translator ought to regard himself as a broker in the great intellectual traffic of the world, and to consider it his business to promote the barter of the produce of mind. For, whatever people may say of the inadequacy of translation, it is, and must ever be, one of the most important and meritorious occupations in the great commerce of the human race."—Goethe, Künst und Allerthum.
PREFACE TO THE SECOND VOLUME.
In the Advertisement to the Seventh Part of the Scientific Memoirs the Editor has already acknowledged the assistance afforded to the work by the British Association for the Advancement of Science, concurring, as it has done most efficiently, with the other public bodies and individuals by whom the success of the undertaking had been promoted. It is now his pleasing duty to state, that the support thus given having afforded an opportunity for the plan and objects of the work to become more generally known, the sale has been so far increased as to give an improved prospect of its permanence; and that a portion of the Third Volume is already in the press.
Of the Memoirs contained in Part VIII. the following have been received from the Committee of the British Association for procuring the translation and publication of Foreign Scientific Memoirs, viz.:—
The Galvanic Circuit investigated Mathematically. By Dr. G. S. Ohm. Continuation.
Bessel on the Barometrical Measurement of Heights.
Rudberg on the Expansion of Dry Air.
Weber on a Transportable Magnetometer. With a Plate.
Weber on the Magnetic Term-Observations for 1839 of the German Magnetic Association. Extract. With a Plate.
Goldschmidt On the Observations of Magnetic Declination at Göttingen.
The continuation of the translation of Ohm's Memoir has ​been paid for out of the grant at the disposal of the Committee; as have the Plates for the two Memoirs of Professor Weber.
The translation of Rudberg's experiments has been presented to the Committee by Professor W. H. Miller, of Cambridge; and the translation of the Memoirs of Bessel, Weber, and Goldschmidt, by Major Sabine; and by the Committee to the Editor.
The Editor has also to acknowledge the valuable assistance which he has received from Professors Miller and Wheatstone in the revision of the translation of Ohm's Memoirs, and of Professor Graham and Richard Phillips, Esq., for similar services with regard to the Chemical Memoirs. To the friendly and zealous cooperation of Major Sabine he is also most especially indebted.
Red Lion Court, Fleet Street,
Feb. 20, 1841.
CONTENTS OF THE SECOND VOLUME.
PART V.
PART VI.
PART VII.
PART VIII.
LIST OF THE PLATES IN VOL. II.,
TO ILLUSTRATE THE FOLLOWING MEMOIRS.
| Plate I. | Prof. Jacobi's Experiments on the application of Electro-magnetism to the Movement of Machines. |
| II. to X. | Gauss and Weber on Terrestrial Magnetism. |
| XI. and XII. | Gauss on the General Theory of Terrestrial Magnetism. |
| XIII. | Gauss on the changes in the Intensity of the Horizontal portion of the Terrestrial Magnetic Force. |
| XIV. | Weber on the Arrangement and Use of the Bifilar Magnetometer. |
| XV. and XVI. | Schleiden on Phytogenesis. |
| XVII. to XXIII. | Gauss on Terrestrial Magnetism:— XVII. Map of the Lines of Declination. XVIII. Map of the Lines of Total Intensity: Part 1. XIX. Ditto: Parts 2 and 3. XX. Map of the Lines of Inclination: Part 1. XXI. Ditto: Parts 2 and 3. XXII. Map of the Lines of Horizontal Intensity: Part 1. XXIII. Ditto: Parts 2 and 3. |
| XXIV. | Ohm on the Galvanic Circuit. |
| XXV. | Weber on a Transportable Magnetometer. |
| XXVI. | Weber on the Term-Observations for 1839 of the German Magnetic Association. |