Syllabus of a course of lectures on natural and experimental philosophy / by A. Walker.

Adam Walker

Date:: [between 1790 and 1799]

Credit: Syllabus of a course of lectures on natural and experimental philosophy / by A. Walker. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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$C'6 ) motion to the flones wichout wheels, cogs or rungs.—Blakcly, BoiJ- ton and Watts''s patent fire or Ream engines.—A common fire engine, with an inverted pifton; and one on an entirely new conflruftion. Many of tkefe engines are 07ilf to be feen at the Jiationary Lecture-' J^jHwiy George Street, Hanover Square, LECTURE VII. Ekarlcity. 1. TTISTORY amd prefent ftate of difcoveries in Ekflrlcity., 2. Eleftric and non-ele£\ric fubftances exhibited by various experiments on conducting and non-conducting fubftances. 2. Mature of points and round bodies in receiving and parting with electricity—proved by fparks—by mills made to move by the .electrical efiluvium iflliitig from a point-—by an electric orrery—by the feather experiment—by the wires for preventing damage by lightning—and by experiments made on pointed and round-ended conductors. 3. Electrical attraction and repulfion proved by ringing of beHs -—and experiments made with the electrometer, electrophor, &:c. 4. Theory of negative and pofitive electricity—proved to be agreeable to the Franklinean hypothcfis by the electrical flalli—by the electrical circuit, and the electrical (hock. LECTURE Vlll. M'lfcellamous Eyiperimenis in EleEh'icity. KTATURE and caufe of lightning, thunder, earthquakes, ^urora borcalis, luininous appearance of the fea, &c.—why ftceples and houfes are liable to be fcruck with lightning, and how pre- _Tcnted—the fafefl fituations in a ftorm of lightning pointed out— and why its mifchief feems fo whimfical and partial.—Each of thefe heads explained by phials, batteries, artificial clouds, fhowers, Zcz. ift, The danger of breaks in a conductor fhewn, by ftoncs ihruck out of a wall, and the demolition of a tall pyramid. 2d, The (ianger of combuRiblcs being in the way of lightning, by the blow* jng up of a boufe, the firing of fpiiits, cotton-wool, inflammable .air, gunpowder, &-c. 3d, Pofitive and negative electricity iiluf- trated by various experiments—how fuperinduced, difturbed, &c. ^th. Piercing books, breaking glaffes, &c. 5th, How electricity is applied medically, viz. by Ihocks, fparks, effluvia, &c. 6th, I;s light exhibited as a name, as a diamond necklace, as an aurora in ^.yacuc, kx.. &c.—A beautiful fortification blown up by electricity. LECTURE IX. Optics. I, T 7ARI0US infects, feeds, farina, pores in roots and branches ^ of plants, animalculae in various fluids, circulation of the blood, eftervefcences, difcharging fixed air, Ihooting of falts, &c. exhibited in a curious folar microfcope. 2. Light, what it is,*and how affeded by paffing in and out of difterent mediuais, proved by various experiments on a ray of light$

Syllabus of a course of lectures on natural and experimental philosophy / by A. Walker.

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