A Letter from John Bevis, M. D. to John Machin, Esq; Secret. R. S. &c. Containing Some Observations concerning Mercury

an appropriated medicinal Fluid; which was, without any Difficulty, retain'd within the Cavity near two Hours, and, at the Close of the Operation, drawn all off at once, without the least Symptom of a Syncope from Inanition; of which I shall beg Leave to acquaint you further, when I see how she holds it, as well as of what else remarkable may occur in the Course of my Practice. I am, with the greatest Regard to the Learned, Worthy Gentlemen of the Royal Society, SIR, Your most obliged, Truro, May 12. 1744. and obedient humble Servant, Chr. Warwick. V. A Letter from John Bevis, M.D. to John Machin, Esq; Secret. R.S. &c. containing some Observations concerning Mercury. SIR, Presented May 4. 1744. THE Observations to which the inclosed Computations are made by Mr. Morris from somewhat more correct Elements than those in Dr. Halley's Tables, were carefully taken by myself, with an excellent astronomical Sector of five Feet Radius. You will perceive how far I am limited, by my Friend's Request; so must intreat you, if you think it worth while, to inform the the Royal Society, that Mercury's Motion has not been at all disturb'd, [by the late Comet] to do it in what manner you shall think best. I am, SIR, Your obedient, Wednesday, May 23. 1744. humble Servant, J. Bevis. 1744, May 17. The apparent Right Ascension of ε Geminorum, according to Dr. Bradley's Observations, Declination, May. Appt. time. Long. Latitude. Comp. Rt. Asc. 15 8 31 15 II 28 56 51 I 57 58 N. 88 50 7 17 8 26 6 S I 1 16 I 44 45 91 7 41 18 9 4 40 I 59 30 I 36 40 92 11 53 19 8 41 00 2 51 38 I 28 7 93 9 12 May. Comp. Declin. Obsd. Rt. Asc. Obsd. Declin. Rt. Asc. Declin. 15 25 26 12 88 49 20 25 26 20 + 47 - 8 17 25 13 00 91 7 4 25 12 56 + 37 + 4 18 25 4 15 92 11 10 25 4 27 + 43 - 12 19 24 54 43 93 8 20 24 54 56 + 52 - 13