VUl 



Supplement to "■ Nature'' J tine 24. 1922 



New Books 



Detailed prospectuses post free on application. 



Ready Immediately. 



Electromagnetic Theory. 



By OLIVER 



HEAVISIDE, F.R.S., Hon. M.I.E.E. Three Volumes. Demy 

 8vo. ^5 : 5s net the set. 



We have great pleasure in announcing the reissue of Oliver 

 Heaviside's great classic, which has been unprocurable for some 

 time in a complete form. The edition is limited to 250 sets, of 

 which loo are for America. This issue must be taken as the final 

 one, at least for many years. 



The Institution of Electrical Engineers, at their recent Jubilee 

 Commemoration, passed a resolution which concluded : "They are 

 convinced that, as now so in the future, the name of Heaviside will 

 be one of the names which will rank among those of the great 

 founders of the science of applied electricity." 



Just Published. 



The English Village: the origin and Decay 

 of its Community. An AnthropoIog:ical Interpretation. 



By HAROLD PEAK.E, F.S.A., President-elect of the Anthro- 

 pological Section of the British Association. With 14 Maps and 

 Plans. Demy 8vo. 15s net. 



" Deeply interesting . . . abundance of knowledge and keenness 

 of interest." — The Times. 



Second Impression now Ready. 



The Structure of the Atom : Notes on 



some recent Theories. By STEPHEN MIALL, B..Sc., LL.D. 

 Demy 8vo. is 6d net. A fascinating booklet, dealing with the 

 Structure of the Atom, Radio-Active Changes, Isotopes, and Lang- 

 muir's Octet Theory. 



"To treat of the structure of the atom, radioactive changes, 

 isotopes and the octet theory in twenty-six pages, and in such a way 

 as to be clear and interesting as well as accurate and instructive, is 

 a task which calls for no little skill. Dr. Miall has undertaken it 

 with a great measure of success." — Nature. 



Just Published. 



Insect Pestsof the Horticulturalist: 



Their Nature and Control. Vol. I : Onion, Carrot and 

 Celery Flies. By K. M. SMITH, A.R.C.S., D.I.C., Adviser 

 in Agricultural Entomology, Manchester University, and J. C. M. 

 GARDNER, A.R.C.S., D.I.C., F.E.S. With 41 Illustrations. 

 Crown 4to. 7s 6d net. 



In the present volume we get the benefit of the collaboration of 

 the Society of Horticultural Technology and the Technical Com- 

 mittee of the Chamber of Horticulture in investigating and making 

 known the life history and habits of three very serious pests of 

 the commercial grower. The information is offered in a form 

 capable of being understood both by students and by practical 

 growers, but its primary appeal is to the scientific worker. 



Ready Immediately. 



Recent Progress in Rubber Chem = 



istry and Technology. 



Crown 8vo. 3s fid net. 



By Dr PHILIP .SCHIDROWITZ. 



The Chemical Engineering Library — Rrst 



Five Volumes. Crown 8vo. 3s net a Volume. 

 General Principles of Chemical Engineering Design. 



By HUGH GRIFFITHS. With 5 Illustrations. 

 Materials of Construction — Non-Metals. By HUGH 



GRIFFITHS. With 11 Illustrations. 

 Weighing and Measuring Chemical Products. By H. L. 



MALAN and A. I. ROBINSON. With 27 Illustrations. 

 The Flow of Liquid Chemicals in Pipes. By NORMAN 



SWINDIN. With 19 Illustrations. 

 Chemical Works Pumping. By NORMAN SWINDIN. 



With 41 Illustrations. 



London : Benn Brothers, Ltd., 8 Bouverie Street, EX. 



RAY TRACK 



APPARATUS 



A modification of Mr. C. T. R. 

 Wilson's Cloud Expansion 

 Apparatus, due to Mr. T. Shimizu. 

 By means of a reciprocating piston 

 a series of expansions is obtained 

 at the rate of 50-200 per minute, 

 cloud tracks being formed at each 

 expansion and dissipated during the 

 compression stroke by applying an 

 electrostatic field. The tracks can be 

 observed visually or photographed. 



Further particulars in List 106 N. 



Tke Cambridge and Paul 



INSTRUMENT CP UP 



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