100 



KNOWLEDGE & SCIENTIFIC NEWS. 



[May, 1904. 



scientific side. That it comes from botli parties may be seen, 

 for example, in the fact that a year ago Professor Goldschmidt, 

 of the University of Heidelberg, was asked by the Director of 

 the ' Badische .'\nilin-und-Soda Fabriken ' to give a series of 

 lectures on this branch of science before the chemists of the 

 factory, and did so with great success. .An opening up of new 

 points' of view, rather than immediate practical results, was 

 expected to flow from these lectures," all of which should 



A plate of tin affected by Tin Disease ^enlarged one and a half times), 



[Fwni ^'Physical Chem^ityy in the Sciences'^}. 



strengthen a case, already overwhelming, for the establish- 

 ment of English Charlottenburgs. From V'an't Hoff's lecture 

 on Industrial Chemistry, «e take also a plate illustrating a 

 curious so-called disease of tin. It is rather a transition of 

 tin from one form to another, and has been recognised as of 

 actual occurrence since the time of .\ristotle. Van't Hoff de- 

 scribed the beautiful methods, largely due to the investigations 

 of Schaum and Cohen, by which the conditions which influence 

 this extraordinary change have been determined. 



BOOK NOTICES. 



Geometr}'. In addition to •' .\ School Geometrv (Parts 

 I.— IV. ; IV., V.)," by H. S. Hall, M..\., and F. S.'stevens, 

 M.A. (Macmillani, which we received last month, and which 

 provides a course of elementarj' geometry based on the recom- 

 mendations of the Mathematical Association and on the 

 schedule recently proposed and adopted at Cambridge, we 

 have received also " Elementary Geometry " (Parts I. and II.), 

 by Cecil Hawkins. M..\. (Blackie), which departs e\en more 

 boldlv than other works based on the tenets of mathematical 

 reform, and which, with practical illustrations, takes pupils 

 and classes, not through the routine of Euclidian propositions, 

 but acquaints them by progressive stages with the ascertain- 

 able properties of '• Intersecting Straight Lines," '• The 

 Triangle," " The Circle,'' " Polygons," and so on to areas and 

 to numerical theorems treated numerically. 



Domestic Economy Reading Books, \ol. il., "The Marshfield 

 Maidens and the Fairy Ordma," by Mrs. W. H. Wigley 

 (Thomas Murby, 3, Ludgate Circus Buildings, E.C.). — Simple 

 lessons in household duties are conveyed in narrative form. 



Logarithims for Beginnings, by Charles PickworthlWhittaker 

 and Co., 2, White Hart Street, E.C.). — A simple introduction 

 to the study of the subject, intended to give a more detailed 

 and practical explanation of logarithms and their \arious 

 applications than is to be found in text-books on algebra and 

 trigonometry. 



Worked Problems In Higher Arithmetic, by W. P. Workman 

 and K. H. Chope (,W. B. Clive, University Tutorial Press). — 



A collection of problems in higher arithmetic, intended espe- 

 cially for students who are preparing for Civil Service E.xa- 

 minations. It will also be of service to teachers. 



Tables of Multiplication, Division, and Proportion, by Robert 

 H. Smith. M.I.M.E. (Archibald Constable).— These elaborate 

 tables will be useful in the ready calculation of quantities and 

 costs, estimates, interests, wages and wage premiums, Li;c. 



The Story of Creation, by Edward Clodd (Watts and Co 

 Sixpenny Edition, with numerous illustrations and good type). 

 — It gives an account of the theory of evolution in clear and 

 popular form, dealing with the distribution of matter in space, 

 the past life history of the earth, present hfe forms, the origin 

 of life and of species, and social evolution. 



An Agnostic's Apology, and other Essays, by Sir Leslie 

 Stephen, K.C.B. (Watts and Co. Sixpenny Edition.) — Con- 

 tains Essay on " Materialism," Newman's " Theory of Belief," 

 ■■ Toleration." 



Remarkable Comets, by William Thynne Lynn, B.A., 

 F.R..A.S. (Sampson Low, .Marston, and Co. New Edition). — 

 It reviews briefly the most interesting — perhaps we should say 

 the most popular — facts in the history of Cometary .Astro- 

 nomy. 



A Safe Course of Experimental Chemistry, by W. T. Boone, 

 B..-\.. B.Sc. (W. B. Clive, Unisersity Tutorial Press).— .\ short 

 course of chemical experiments, designed to train students in 

 solving elementary problems by experiment, in accuracy in 

 their work, and in reasoning from observation. It is espe- 

 cially intended for the London matriculant who intends to 

 take the Intermediate Science Examination, or for students 

 in training colleges who have to take the prescribed course in 

 general elementaiy science. 



Second Stage Botany, by J. M. Lowson, M.A., B.Sc, F.L.S. 

 (W. B. Clive. University Tutorial Press). — This is an adapta- 

 tion of the •■ Text Book of Botany " to the requirements ot the 

 second stage examination of the Board of Education, South 

 Kensington. The first part of the book deals with morphology, 

 histology, physiology ; the diagrams and illustrations are 

 numerous and clear, and will be very helpful to students. 



Modern Navigation, by William Hall, B..\. (W. B. Clive, 

 University Tutorial Press), is intended primarily as a text-book 

 for students of navigation and also as a handbook for navi- 

 gators. It will be found useful in the various examinations of 

 the Royal Navy, the Mercantile Marine, and the Board of 

 Education. The explanation of compass deviations and 

 tides will introduce the student to more detailed works on the 

 subject. 



Pocket Edition of the Works of John Ruskin (George .\llen). 

 — A small and pretty edition of Ruskin reprints, light to hold, 

 and pleasant to read. '• Sesame and Lilies," which deals 

 with ''The Mystery of Life and its .Arts," and insists that 

 '• those of us who mean to fulfil our duty ought first to live on 

 as little as we can ; and secondlj' to do all the wholesome 

 work for it we can, and to spend all we can spare in doing all 

 the good we can." 



The Crown of Wild Olive ; Essays on '■ Work and War and 

 the Future of England," and " Lectures on .Art" — Essays 011 

 the Relation of .Art to Morals and the Relation of .Art to 

 Use. These three volumes contain some of the most 

 strenuous common-sense and right-thinking in Ruskin's 

 works. 



Messrs. John Wheldon and Co., of Great Oueen Street, have 

 issued a clearance catalogue of a miscellaneous collection of 

 books. The volumes include works on botany, entomology, 

 and ornithology. There are especially to be noted some 

 works on fungi and publications relating to meteorology. 



Messrs. Isenthal's new catalogue is well worth attention for 

 the completeness of the Rontgen-ray and allied apparatus 

 which their manufacturers ofl'er. The very large and greatly 

 increasing numbers of devices used in electro therapeutics 

 and in the new methods of the light treatment of disease are 

 specially noticeable. 



Messrs. Harry W. Cox's new catalogue of X-ray and 

 high-frequency apparatus includes an extension of their 

 pre%iously issued practical hints to beginners. These hints, 

 covering work with X-ray coils, mercury and other interrupters, 

 and describing the best methods of connecting rheostats and 

 charging accumulators from the mains, are extremely useful, 

 and mucli to the point. They add distinctly to the % alue 

 and interest of the catalogue. 



