Diagrams of Terrestrial and Astronomical Objects and Phenomena

Abstract

IN a set of twelve diagrams issued under the above title, the author has supplied a convenience which has been wanted for some time past in the class-teaching of elementary science, thus removing a considerable part of the difficulty experienced in obtaining, in diagram form, results of recent work in any subject. Teachers of physiography will be directly benefited, but most of the diagrams will be found useful in the illustration of geographical and elementary teaching. Many of the figures are almost of necessity similar to previous ones; but even in these cases the treatment is original, the descriptive text being specially clear and devoid of superfluous detail. Evidence of the degree to which recent discoveries are brought up to date is specially well shown in the diagram of “the sun's family of planets,” in which the planets Jupiter and Saturn are reproductions from the drawings of these bodies by Profs. Keeler and Barnard respectively, observed by them at the Lick Observatory quite recently. A diagram illustrating the various forms of aqueous circulation is also specially clear and self-explanatory. Diagrams of Terrestrial and Astronomical Objects and Phenomena. By R. A. Gregory (London: Chapman and Hall, Ltd., 1896.)