An essay on electricity : explaining the principles of that useful science, and describing the instruments, contrived either to illustrate the theory, or render the practice entertaining : illustrated with six plates. To which is added, a letter to the author, from Mr. John Birch, surgeon, on the subject of medical electricity / by the late George Adams.
- George Adams Jr.
- Date:
- 1799
Licence: Public Domain Mark
Credit: An essay on electricity : explaining the principles of that useful science, and describing the instruments, contrived either to illustrate the theory, or render the practice entertaining : illustrated with six plates. To which is added, a letter to the author, from Mr. John Birch, surgeon, on the subject of medical electricity / by the late George Adams. Source: Wellcome Collection.
Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.
639/648
![The two curious matbe , of which is gaged so as to prove it to be larger than the other, yet the larger one will actually through the smaller one, and not in \ s. d. \ * * ■% The mathematical paradox, a piece of wood of one figure. any degree stretch it 1 O O fits exactly, and passes through a triangular, a S(][uare, and a circular hole v* 0 2 0 A double cone, that apparently rolls upwards up an inclined plane, though actually descending O 4 6 A mechanical instrument, consisting of a cube and two ^ wooden handles, that supports itself on a point, although the entire form and weight appear evidently all oh one side 0 12 0 A cylindrical mirror that produces two or three curious optical effects 1 l O A magic or electrical bottle, that is charged by the rubbing of a ribband only, and will give a shock to five or six per- sons, with apparatus, in a pocket case 0 10 0- A set of the artificial fire-v/orks imitated, containing a series of brilliant and entertaining scenes of fire-works, cascades . of fire, &c. producing altogether a pleasing effect, and not attended with any trouble, noise, or danger, when usingj the whole contained in a neat mahogany box 7 7 ^ The maglc-lanthorn apparatus conjoined with the above ... 10 10 0 Concave mirrors fitted up in boxes, to magnify prints, to , jj;iew various deceptions in an entertaining and pleasing ^ mainner,' from 5l, 5s. to 12 0 0 Besides the preceding, a great variety of other articles too numerous to be included in this catalogue, as well as any instrumental article made from particular drawings, or as described by the different writers upon mathematics, philosophy, chemistry, &:c. &c. Merchants, shopkeepers, schoolmasters, and others that sell again, are supplied with the best articles, and with good allowance. Letters from the country or abroad, containing orders or previous inquiries, explicitly and punctually attended to. Les academies., ohservatoircs ct ecoles des pays etrangers ahisi que les c:.gudants, merchands et autres personnes pendent se procurer tonics sortes ^instruments de la meilleure qualiie, tant pour les matcriaux, que la mam doeuvre, avec la plus grande expedition, et au plus ju^te prix. A Description and Use of the New Portable Orrery, to which is prefixed a short account of the solar system, including a concise description of the recent discoveries''by Dr. Herschel, &c. with three copper-plates, 5th edition , ,, 0 2 O BOOKS PUBLISHED BY W. JONES. \ I](https://iiif.wellcomecollection.org/image/b24926516_0639.jp2/full/800%2C/0/default.jpg)