Scientific Thought, "Wark and Affairs, April 1096, Edward Arnold, mi. 1/8. Per annum 31/2, This excellent quarterly maintains its high standard and, next to "Nature," is probably the best general summary of current science available. [The present number contains special Brticles'on the central nervous the transparency of matter to high velocity particles, the geometry] }9f the molecule in carbon compounds, how izards replace their tails, one of lected. Robert Boyle's orities, and the struc+ ture of cellulose and starch. None of these lend themselves much to Popular discussion, but in the notes fon recent advances in science there {gone item which may become of great interest. This is the dating. of Prehistoric man. Until recently" all Reolozy has been descriptive rather than chronological, except that the discovery of certain radioactive changes in rocks has enabled a rough time scale to be given to the geologic cal series, stretching over about one thousand million years. This method far is of little use for relatively short periods such as a paltry million }years and in consequence the dating the glacial periods has been very sketchy.
Text read from the printed page and cleaned; old type leaves the occasional error.