Volcanoes and earthquakes, 19 Water, a powerful tool of Nature, 34, 45; thrown out of the earth, 54 Weapons, early, 121; and tools, where found, 131 Whales, 101 World, early history of the, 3, 4; size and shape, 17; materials of, 17; heat of, 18 Work, the, of time, 167 Writing, origin of, 123; Mexican, Egyptian, and Assyrian, 124, 125; on papyrus, 125; by signs, 125 LONDON: PRINTED BY SPOTTISWOODE AND CO., NEW-STREET SQUARE AND PARLIAMENT STREET OPINIONS OF THE PRESS. ‘The present little work, which is specially addressed to children, is written in so pleasant and easy a style, and its descriptions of life on the earth are on the whole so simple and accurate, that we can heartily recommend it to the attention of those who seek such a guide. The illustrations are good, and the general appearance of the book such that it may compare most favourably with other primers of geology.’ GEOLOGICAL MAGAZINE. ‘Written in clear and simple style, especially attractive to children. It includes an account of pre-historic man, and shows in many other ways that the writer is familiar with some of the latest phases of geological thought.’ ACADEMY. ‘The avowed object of this charming little book is to place the results of these researches within the grasp of children, by presenting them in language at once clear, simple, and winning.... In this hard task Mr. NICOLS has succeeded admirably, without resorting to that base subterfuge—the attempt to clothe instruction in the guise of fiction.... This is true education, for it teaches children first to observe and then to reason.... Though the style of this delightful book is simple and childlike, it is as far as possible removed from being childish.’ PALL MALL GAZETTE. ‘The language is plain, the descriptions are lucid, the illustrations apt, and the broad facts of the science are very correctly stated. The work, too, is free from all attempts at fine writing.... We wish the book success as at any rate an attempt to lay before the young fact instead of fiction.’ QUARTERLY JOURNAL of SCIENCE. ‘The book is a successful attempt to explain the simplest facts of geology, and of the succession of life on the earth.’ WESTMINSTER REVIEW. ‘The idea is a happy one, and will recommend itself to children; and we are bound to say that Mr. NICOLS has carried out his idea remarkably well, and produced a work which will do much to spread sound notions upon the gradual development of our earth and its inhabitants to the condition in which we now see them.... We can safely recommend Mr. NICOLS’ little book as one that will have a most beneficial effect in opening the minds of its young readers.’ POPULAR SCIENCE REVIEW. ‘This is a good little book, cleverly written by an able geologist, and well adapted for children. We can recommend the volume as a present to any intelligent boy or girl.’ LANCET.