XVI. New Method of computing Logarithms. By Thomas Manning, Esq. Communicated by the Right Hon. Sir Joseph Banks, K.B. P.R.S. p. 327
XVII. Description of the Mineral Bason in the Counties of Monmouth, Glamorgan, Brecon, Carmarthen, and Pembroke. By Mr. Edward Martin. Communicated by the Right Hon. C. F. Greville, F.R.S. p. 342
XVIII. Observations on the Permanency of the Variation of the Compass at Jamaica. In a Letter from Mr. James Robertson to the Right Hon. Sir Joseph Banks, K.B. P.R.S. &c. p. 348
XIX. Observations on the Camel's Stomach respecting the Water it contains, and the Reservoirs, in which that Fluid is inclosed; with an Account of some Peculiarities in the Urine. By Everard Home, Esq. F.R.S. p. 357
XX. Observations on the Variation, and on the Dip of the magnetic Needle, made at the Apartments of the Royal Society, between the Years 1786 and 1805 inclusive. By Mr. George Gilpin. Communicated by Henry Cavendish, Esq. F.R.S. p. 385
XXI. On the Declinations of some of the principal fixed Stars; with a Description of an Astronomical Circle, and some Remarks on the Construction of Circular Instruments. By John Pond, Esq. Communicated by Smithson Tennant, Esq. F.R.S, p. 420
XXII. Observations and Remarks on the Figure, the Climate, and the Atmosphere of Saturn and its Ring. By William Herschel, LL. D. F.R.S. p. 455
Presents received by the Royal Society, from November, 1805, to June, 1806. p. 468
