"Chats On Science," which has just been published, is made up of eighty-five brief chapters or sections or periods, each complete in itself, dealing with a gorgeous variety of subjects. They go from Popover Stars to Soda Water, from How Old Is Disease to Einstein in Words of One Syllable. The reader can begin anywhere, but when he begins he will ultimately read the entire series. It is good science and good reading. It contains some of the best writing Dr. Slosson has ever done. The Boston Transcript says: "These 'Chats' are even more fascinating, were that possible, than 'Creative Chemistry.' They are more marvelous than the most marvelous of fairy tales ... Even an adequate review could give little idea of the treasures of modern scientific knowledge 'Chats on Science' contains ... Dr. Slosson has, besides rare scientific knowledge, that gift of the gods--imagination." * * * * * ("Chats on Science" by E.E. Slosson is published by The Century Company, 353 Fourth Avenue, New York City. It is sold for $2.00 at all bookstores, or it may be ordered from the publisher.) FOOTNOTES: [1] I am quoting mostly Unstead's figures from the _Geographical Journal_ of 1913. See also Dickson's "The Distribution of Mankind," in Smithsonian Report, 1913. [2] United States Abstract of Census of Manufactures, 1914, p. 34. [3] United States Department of Agriculture, Bulletin No. 505.