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CONTENTS.
| XXXVII. | An Account of an extrordinary Shower of black Dust, that fell in the Island of Zetland 20th October 1755. In a Letter from Sir Andrew Mitchell, of Westshore, Bart. to John Pringle, M.D. F.R.S. | p. 297 |
| XXXVIII. | A Description of some Thermometers for particular Uses. By the Right Honourable the Lord Charles Cavendish, V.P.R.S. | p. 300 |
| XXXVII. | Observationes Anatomico-Medicæ de Monstro bicorporeo Virgineo A. 1701. die 26 Oct. in Pannonia, infra Comaromium, in Possessione Szony, quondam Quiritum Bregetione, in lucem edito, atque A. 1723. die 23 Febr. Posonii in Cænobio Monialium S. Ursulæ morte functo ibidemque sepulto. Authore Justo Johanne Torkos, M.D. Soc. Regalis Socio. | p. 311 |
| XL. | Observations on the Origin and Use of the Lymphatic Vessels of Animals: Being an Extract from the Gulstonian Lectures, read in the Theatre of the College of Physicians of London, in June 1755. By Mark Akenside, M.D. Fellow of the College of Physicians, and of the Royal Society. | p. 322 |
| XLI. | A Letter to the Right Honourable the Earl of Macclesfield, President, the Council, and Fellows, of the Royal Society, concerning the Variation of the Magnetic Needle; with a Sett of Tables annexed, which exhibit the Result of upwards of Fifty Thousand Observations, in Six periodic Reviews, from the Year 1700 to the Year 1756, both inclusive; and are adapted to every Five Degrees of Latitude and Longitude in the more frequented Oceans. By William Mountaine and James Dodson, Fellows of the Royal Society. | p. 329 |
XLII.
