the students' views forwarded. To these none but pupils can be admitted. Spacious apartments, thoroughly ventilated, and replete with every convenience, are open from five o'clock in the morning, for the purposes of dissecting and injecting, where Mr. Brookes attends to direct the students, and demonstrate the various parts as they appear on dissection. An extensive museum, containing preparations illustrative of every part of the human body and its diseases, appertains to this Theatre, to which students will have occasional admittance. Gentlemen inclined to support this school by contributing preternatural or morbid parts, subjects in natural history, &c. (individually of little value to the possessors) may have the pleasure of seeing them preserved, arranged, and registered, with the names of the donors. Terms. For a course of lectures, including the dissections, 51. 5s. For a perpetual pupil to the lectures and dissections, 10l. 10s. The inconveniences usually attending anatomical investi gations are counteracted by an antiseptic process, the result of experiments made by Mr. Brookes on human subjects at Paris, in the year 1782; the account of which was delivered to the Royal Society, and read on the 17th of June 1784. This method has since been so far improved, that the florid colour of the muscles is preserved and even heightened. Pupils may be accommodated in the house.-Gentlemen established in practice, desirous of renewing their anatomical knowledge, may be accommodated with an apartment to dissect in privately. Dr. CLUTTERBUCK, Physician to the General Dispensary, Aldersgate-street, will commence his Summer Course of Lectures on the Theory and Practice of Physic and the Materia Medica, on Monday the 30th of May, at Eight in the Morning, precisely, viz., on the Theory and Practice, on Mondays, Wednesdays, and Fridays: and on the Materia Medica, on Tuesdays and Thursdays, at the same hour. In these lectures will be given an outline of the structure and functions of the human body, as an indispensable preli minary to the knowlege of the nature and treatment of its various disorders. The lectures on the materia medica will contain the medical and pharmaceutical history of the articles in general use; with an explanation of their mode of acting, and their application to the cure of diseases. The subjects will be illustrated by occasional reference to the practice of the Dispensary. For further particulars, application, may be made at the Dispensary, or at No. 17, St. Paul's Churchyard. Dr. GEORGE PEARSON, Senior Physician to St. George's Hospital, will begin his Summer Course of Lectures on the Theory and Practice of Physic, Materia Medica, and Chemistry, at his house in George-street, Hanover-square, the first week in June:-viz. the Medical Lecture at Eight, and the Chemical at Nine.-Particulars may be known in Georgestreet, or at St. George's Hospital. Mr. JOHN TAUNTON, Surgeon to the City and Finsbury Dispensaries, &c., will commence his Summer Course of Lectures on Anatomy, Physiology, Pathology, and Surgery, on Saturday the 28th of May at Eight o'clock in the Evening, at his house in Greville-street, Hatton Garden, where further particulars may be known. LIST OF PATENTS FOR NEW INVENTIONS. To William Francis Snowden, of Oxford-street, in the county of Middlesex, esq. engine-maker, for certain improvements in an engine for cutting hay and straw into chaff, and for cutting other articles. February 4. To John Shorter Morris, of Pancras Place, in the parish of Pancras, in the county of Middlesex, gent., for his machine for mangling. February 4. To Ralph Wedgwood, of Oxford-street, in the county of Middlesex, gent., for his apparatus for producing several original writings or drawings at one and the same time, which he calls a pennexpolygraph, or pen and sylographic manifold writer. February 22. To Samuel Thomson, of Addle-street, London, calenderer; for a machine, engine, or frame for the purpose of widening or stretching to the width, leather, linen, cotton, and woollen stuffs. March 3. METEORO LVII. Reduction of the Observation of the Transit of Mercury over the Sun, observed at the Royal Observatory, Greenwich, on the 8th of November, 1802. nicated by T. FIRMINGER, Esq. Commu THE particulars respecting this observation are detailed in the annual sheets published by the Royal Society; but as these sheets contain nothing more than a mere register of the astronomical observations made in the Royal Observatory at Greenwich, they are in general so little interesting, as to be found in the hands of but few astronomical or mathematical persons. It was therefore thought advisable, previous to giving a reduction of this transit, to transcribe the observation, as given in the account of the Greenwich observations of that year. Transit of Mercury over the Sun on the 8th of November 1802. "I fitted the divided achromatic object-glass micrometer to the 46-inch achromatic telescope, and adapted the telescope to distinct vision, by trying it upon a large spot near the western limb of the Sun; which I had no occasion to alter during the whole period of the observation, as I continued to see Mercury perfectly distinct and well defined to the end of the transit. After having made this arrangement, I began measuring the distance of Mercury from the Sun's nearest limb, by bringing the exterior limb of Mercury to touch the interior limb of the Sun, and obtained the following set of distances. Vol. 30. No. 120, May 1808. T Time "From 12h 50m to 13h 40m per clock, or from 21h 56m to 22h 46m apparent time, I measured the horizontal diameter of Mercury, which, from a mean of 26 observations upon the scale, amounted to 11.646 of the vernier; and from a mean of 27 off the scale, it amounted to 15.255 parts of the vernier; the mean of both amounts to 11.646 parts of the vernier, or 8" 17; and the correction of the vernier is -0".95 of its parts, or 0.73. "By a mean of 21 measures the Sun's horizontal diameter was 5 inches O tenths 8.253 vernier, which diminished by 0.95 the correction of adjustment leaves 5 inches tenths 7.3 vernier 5.0646 inches, answering to 32′ 25"-4, the apparent diameter of the Sun; from which we derive the value of the scale. "At 14h 51m 36.8, or 23h 57m 21.4 apparent time, I observed with the 46-inch achromatic telescope the thread of light between Mercury and the Sun's limb to break, or, the |