TABLE OF CONTENTS 



TO THIS THIRTEENTH VOLUME. 



JANUARY, 1806. 



Engravings of the following Objefts : 1. Delineations of certain Phenomena of 

 Ele£lric Light not hitherto delcribedj 2, Dr, Herfchers Reprelentation of 

 the lingular Figure of the Planet Saturn ; 3. Diagrams to iiluftrate Dr. Her- 

 fchel's Deduftions of the Motion of our Planetary Syftem through the Re- 

 gions of Space, and the Dire6lions of that Motion. 



I. On the Caufe of Fairy Rings. By John Gough, Efq. - Page I 



II. Obfervations on the fingular Figure of the Planet Saturn. By William 

 Herfchel, L. L. D. F. R. S. - - - - - 4 



III. Fafts and Obfervations on the medical Refpiration of gafeous Oxide of 

 Azote. In aLetter from Dr. Beddoes. - - - - 11 



IV. Abftrafl of Obfervations on a diurnal Variation of the Barometer between 

 the Tropics. By J. Horlburgh, Efq. In a Letter to Henry Cavendlfli, Efq. 

 F.R. S. Read March 1 4-, 1805. - - - - IS 



V. Second Communication on Artificial Tan. By Charles Hatcliett, Efq. 

 Abridged from the Philofophical Tranfaaions for 1805. - 23 



VI. On carbonifed Turf. From a Report made to the Prefefl of Police (at 

 Paris) on the Methods employed for reducing it to this State. By MM, 

 Callias and Co. - - - - - - - 36 



VIL Account of the Catarafts and Canal of Troellhoeta, in Sweden, (from 

 a Work relative to thera by Colonel Skioekiebrand. Publifkcdin one Volume 

 Quarto, at Stockholm.) - - - - - 39 



VIIL Letter from H. B. K. on the Produftion of Nitrous Acid, and other 

 Fafts. - - - - - - , . 40 



IX. Report of M. Debuc's Memoir on Acetic Acid, made by M. M. Planche 

 and Boullay, by Order of the Society of Pharmacy at Paris. - 42 



X. Account of the Imperial Botanic Garden of Schoenbrunn, in the Vicinity 

 of Vienna. .„.-,, -47 



XI. Letter from a Correfpondcnt on the Means of increafing the Adion of 

 Sound on the Organs of fuch as are partially de.jf. - - 52 



JCII. Eafy and correft Method of verifying the Portion of a Tranfit Inftru- . 

 ment. By J. S. Butt, Efq, Communicated by the Autlior. - 53 



XIII. A Comparifon of fome Obfervations on the Diurnal Variations of the 

 Barometer, made in Peyroufe's Voyage round the World, with tliofe made 

 at Calcutta by Dr. Balfour. - - - - - 5(> 



XIV. A^ft>-aft of a Memoir on the Dlre£lion apd Velocity of the Motion of 

 the Sun and Solar Syftem. By Dr. Herfchel. From the Philofophical Tranf- 

 a6\ions, 1805. (A.) - . . . . - 59 



XV. New Experiments on the Solution of Sulphur in Alcohol, and the vari- 

 ous Kinds of Ether. JBy M. Favre. c - . - oS 



XVI. On the Utility of fcientific periodical Publications. In aLetter from Mr. 

 Richard Winter. To which are added, fome Experiments of Heat produced 

 by a Blaft of Air from Bellows. - - - - - 72 



XVII. An Account of two interfering Rainbows, feen at Dunglafs in Eaft 

 Lothian in July laft, was communicated by Profeilur Playfair. - 1'i 



XVIII. Notice of a Collection of Meniojrs Nvhich have lately appeared at Pans, 

 being Partof a Work on which the celebrated Lavoilier was employed till the 

 lamented Clol'e of his Life; with a Tranllation of that Meinoir, in which 

 he claims the modern Theory of Chcmiltry as his ov^^n exckifive Difcuvery. 

 Received from Mr. W. A. Cadeii, at Paris, - - - 77 



XIX. On a Method pf analyzing Stones containing fixed Alkali, by Means of 

 the Boracic Acid. By Humphry Davy, Efq. F. K. S. Profelfor of Chtmiftry 

 in the Royal Inftitution. : - - - - S'- 



XX. Some Facts and Speculations on the luminous Phenomena of Electricity. 

 W.n: - - . - - . . - 87 



Scientific News, .01. — Anatomirn! Cabinet, ib. — Shower of Peas, ib.— Univei- 

 t.ii Language, ib. — Turkifh Edict in Favour of Science, 92. — Coptic Man u- 

 fciiptj, ib. 



FEBRUARY 



