KD48032 HARVARD 51*92 EXPLANATION OF THE ENGRAVING. (Fronting the Title.) The five figures on the upper part of the plate, marked 1, 2, 3, 4, &c. represent the planets Herschel, Saturn, Jupiter, the Earth, and Moon, in their relative sizes and proportions; together with telescopic views of the belts and rings of Saturn, and the belts of Jupiter. The two figures immediately below, marked 5 and 6, are intended to illustrate the description given of the eye, pp. 98-116. Fig. 5. represents a front view of the human eye. Fig. 6. represents a section of it, exhibiting the three coats and the three humors of which it is composed. Fig. 7. represents a rude view of the appearance which the rings and moons of Saturn will exhibit, in certain cases, as beheld from a point 20 or 30 degrees north from his equator, see pp. 212, 213. The shade on the upper part of the rings represents the shadow of the body of Saturn, as it appears upon the rings about midnight. DAVID BREWSTER, LL. D. Fellow of the Royal Society of London; Secretary to the Royal Society of Edinburgh; Honorary Member of the Royal Irish Academy; Member of the Royal Swedish Academy of Sciences; Honorary Associate of the Royal Academy of Sciences at Lyons, &c. &c. THIS VOLUME, Intended to illustrate the connection of science and philosophy with religion, and with the moral improvement of mankind, is inscribed as a testimony of respect for the acquisitions which science has derived from his philosophical discoveries and literary labours, by his most obedient, and humble servant, THE AUTHOR. |