60 REVIEWS. 



The World's Lumber-room: a Gossip about some of its 



Contents. By Selina Gaye. With 57 Illustrations. Cr. 8vo., pp. xii. — 316. 

 Price 3s. 6d. (London : Cassell and Co. 1885.) 



We find here popularly described some of the ways in which refuse is made 

 and disposed of, first by Nature and secondly by Man. Thus we have des- 

 cribed, Dust and Dust Makers, Frost, Heat, Air, Water, etc. ; What becomes 

 of Dust, Vegetable Refuse, and Scavengers ; Animal Scavengers, Ants, Flies, 

 Beetles, etc. ; Household and Miscellaneous Refuse. 



Science in Sport made Philosophy in Earnest; being an 

 attempt to illustrate some elementary principles in Physical Knowledge, by 

 means of Toys and Pastimes. Edited by Robert Routledge, B.Sc, F.C.S., 

 etc. Post 8vo, pp. xvi. — 332. (London : Routledge and Co.) Price 5s. 



Few books will be more agreeable to boys of a scientific turn of mind than 

 this. It is written in the form of a tale, the scientific experiments described 

 being those performed for the amusement and instruction of the boys whilst 

 home for their holidays. 



Properties of Matter. By P. G. Tait, M.A., Sec. R.S.E. 



Cr. 8vo., pp. viii. — 320. (Edinburgh : A. and C. Black. 1885.) 



This is an introduction to the course of Natural Philosophy taken in Edin- 

 burgh, a work in every way worthy of the author, who is professor of natural 

 history in the University. In it the difficult subjects of the ultimate structure 

 of Matter, Time and Space, Inertia, Centrifugal Force, Gravitation, Com- 

 pressibility of Gases and Vapours, Cohesion, and Capillarity, with many other 

 kindred studies, are treated in the most lucid manner, extracts from original 

 memoirs bearing on the subjects being frequently inserted, and their value 

 discussed in the light of modern research. 



Universal Attraction : Its Relation to the Chemical Ele- 

 ments ; the Key to a Consistent Philosophy. By W. H. Sharp. Cr, 8vo, 

 pp. 53. (Edinburgh :, E. and S. Livingstone. London : Simpkin, Marshall, 

 and Co. 1884.) 



An attempt to connect the law of gravitation with, and to supersede it by, 

 our present knowledge of chemistry and molecular physics. It is in reality 

 designed to show that " Gravitation " is caused by Wave-Motion, and that 

 Quantivalence," as known to chemists, is the true measure of " Mass." 



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Arithmetical Physics. 



Acoustics, Light, and Heat. — Part I. A., Elementary, 2s. 

 Magnetism and Electricity. — Part II. A., Elementary, is. 

 Ditto. Ditto. Part II. B., Advanced, 3s. 



By C. J. Woodward, B.Sc. (London: Simpkin, Marshall, and Co. Bir- 

 mingham: Cornish Bros. 1885.) 



These works are in two stages : elementary and advanced. They will be 

 found of much service in class teaching ; the examples are well chosen, and 

 afford the teacher good help in testing the real advance of his pupils in the 

 knowledge of the subjects under discussion. 



The Windmill as a Prime Mover. By Alfred R. Wolff, 



M.E. 8vo, pp. xiii. — 159. (New York: John Wiley and Son. 1885.) 

 Price $3. 



We have here a consideration of the more important features of windmill 



