icq 



NATURE 



1 > l 24, I'jiS 



high pressures in current use in tru hydraulic industry 

 may give thi -a ati 



iuI the < Kperimental stud) "f water 



has 1 iki velocities 



of to mi tres t- 1 set ond. In the 1 cpei iments 



ibed iln' velocities rangi from So i<- >> netres 



per se< ond. For \ 1 pei sei ond 



lation log J 1-93 1 ig l ound t<> hold, 



I dp o.v and U = thi \. 



Veronnct : The limit and extenl "i an atmosphere, 

 application to the planets M Porlevin : [nternal 

 strains developed in metals and alloys bj rapid cool- 

 ing.- H, Beclere : The construction of plans in stereo- 

 scope radiography. G. F. Dollfiu and P. Marty: The 

 discover) of .1 fossil-bearinj layet in the Cantal. — 

 P. Georgevltch ; Asexual generation of Padina 

 bavonia. P. I.esne : The sub-fossil entomological 

 fauna of the submarim peats "I Belle Isle. 



Mi I I (II KM. 



Royal Societj of Victoria, August S. Mr. F. Wise- 

 would, vice-president, in the chair. Mis- X. C. B. 

 Allen and Prof. T. II. Laby : The sensitiveness of 

 photographic plans to X-rays. This work was per- 

 formed in order to find the speed, inertia, contrast, 

 and fog-density of various plates foi exposures to 

 X-rays, and the physical basis upon which these quali- 

 ties depend. It was found that the density of a plate 

 depends, within the range of wave-lengths investigated, 

 not on the wave-length, but only on the energy of 

 the X-rays. — F. Chapman : New or little-known Vic- 

 torian fossils in the National Museum. Part xxii. : 

 Some Palaeozoic worms, with evidence of their soft 

 parts. Trachyderma, one of the commonest fossils 

 from the Silurian of the Melbourne area, has until 

 lately been known only by sub-chitinous tubes pene- 

 trating tin mudstone obliquely or vertically to the 

 stratification. Recently discovered fossil remains, 

 together with others collected many years ago, prove 

 to be remarkably well perserved gill-plumes (pro- 

 stomial appendages) of Trachyderma, which was a 

 Chaetopod having affinities with the Cryptocephala. 

 1- nt eye-spots and dorsal appendices can 1» seen 

 on some of the best-preserved examples. The tube 

 of Cormtlites yotingi, a new species from the Lower 

 Ordovician of the Moorabool River, is described. 

 Thi- is probably thi oldest known species of the genus. 

 Phe evidence of the present species points to an 

 affinity with the worms, and by its blunt and im- 

 pressed base \\ a- mosl 1 i U< l\ attached to 

 - 



HOOKS RECEIVED. 

 All Alive O ! A Vade Mecum foi Breeders and 

 ol Hi. is, s. etc. B) J. (.. Lyall. Pp. so. 

 I Lini "In : l.v.dl and Sons.) j.v. i>,/. 



d,' Th\ sjcjui . 1 -ollection de 

 Ri l.uifs a la I'lv, sique. I leuxiemi si 1 ii 

 I. 's Proj - '1. la Physique Moteculaire. By Mme. 

 1 thi 1 s. Pp. 242 • 1 1 plates. (Paris : 

 Gauthii r-> Cie.) 12 frt 



Biolog\ ol Parents and 'I eai 



T. W. Galloway. Pp. 128. (London : 1). C. Heath 

 and < u. j is. in 1. 



Fungi and I > ■ Bv E. J. Butler. 



Pp. vi + 547. (Ca I Simla : Thai ki r, Spink, 



and Co I 



Staple rradi - Edited by G. D. 



Knox. Vol. i. Wool, L F. Ormerod. Pp. xii 218. 

 London: Constabli and 1 o., Ltd. 6s. 6d. net. 



I Fenomeni Elettro-Atomici sotti 1 del Mag- 



netismo. B\ Pro"f.'A. Righi. Pp.xvi-+ j t] 



N. /.anichelli.) 17.50 



J556, VOL. 102] 



A he..-; ' !ouj se of Practical Zo 



\ Miln< s Marshall and Dr. ( . H. Hurst. 



1 edition, revised by Trot. 1. \\ . Gamble. 



.1.515. (London: J. Murray.) :>. net. 



Numerical Trigonometry. Bj I'. Abbott. Pp. \ + 



mati( al tables pp. iii don : 



Longmans and Co.) 5*. net . 



Mathematical Tables and Formulae. B\ P 

 Pp. i\ 5.S. (London: Longmans and 1 1 



The Future Citizen and his Mother. Bv Dr. C. 

 Porter. Pp. xvi + 144. (London: Colts 

 I.td.i ,v 6d. 



DIARY OF SOCIETIES. 



FRIDAY, 



I 5 , , C iftv. at $•— Discussion : The Ca-e for a Ring Elccron. 



MONDAY. October 28. 

 Rovai. Society of Arts, at 3 — Consideration of n Scheme for the Promo- 

 tion cf Industrial Art. 



TUESDAY, October .•?. 



Royal Ati uroi JCAt Institute, at 5. Reginald A. Smith : (1) Stone 



[mn'ements and "Tortoise-cores" Collected by Resident Magistrate 

 K. J. lansen al Vii t.iria West, Cape of Good Hope : (2) Implements of 

 Neolithic types from Narkaru Bauchi Plateau. Niceria, Exhibit 

 1 :, W. Lamplugh. P.G S. ; (3) Specimens of a Serie* of Stone Implements 

 Collected by Capt. C. W. Cunnington. near Siwa. Libyan Desert. 

 TUESDAY, N..VF.-11 1 

 Institution of Civil Engineers, at 5.30.— Sir John A. F. Aspinall : 

 Inaugural Address, and Presentation of the Medals recently Awarded by 

 the Council. 



WEDNESDAY, Novi 

 Society of Public Analysts, at 5.— H. Droop Richmond : Note on the 

 Graduation of Gerber Butyromelers.— B. G. McLellan and A. W. Knapp : 

 The Estimation of Cacao shell 



THURSDAY, November 7. 

 Institution- of Electrical Encineers, at 6.— Tenth Kelvin Lecture — 

 L. B. Atkinson : The Dynamical Theory of Electi ic Engines. 

 FRIDAY, November 8. 

 Royal Astronomical Society, at 5. 



CONTENTS. page 



Waste and Wealth . 141 



Mental Disorders and their Treatment 142 



Inorganic Chemistry for Students. By W. H. M. . 142 



Our Bookshelf 143 



Letters to the Editor:— 



The Organisation of Scientific Workers. — Dr. C. 

 Shearer, F.R.S., Franklin Kidd, Dr. Harold 



Jeffreys . 144 



Science and Parliamentary Representation. By 



J. J. Robinson 144 



Epidemic Influenza. By Prof. R. T. Hewlett . . 146 



The Salters' Institute ot Industrial Chemistry . . . 147 



The Reconstruction of the Fishing Industry . . . 148 



Notes 149 



Our Astronomical Column : — 



Borrelly's Comet 153 



Wolfs Comet ... . ..... 153 



Solar-line Displacements and Relativity 153 



Scientific and Practical Metr.c Units 153 



Fruit Investigations at Long Ashton ....... 154 



A New Graphic Method in Nautical Astronomy. 



{With Diagrams.) By H. B. G 155 



Experimental Studies of the Mechanical Properties 



of Materials. Bv Dr. W. Cawthotne Unwin, F. R.S. 156 



University and Educational Intelligence 158 



Societies and Academies 159 



Books Received 160 



Diary of Societies 160 



Editorial and Publishing Offices: 



MACM1LLAN AND CO., Ltd.. 



ST. MARTIN'S STREET, LONDON. W.C.2. 



AAverlL 



Iters I" be .iddressed to the 

 Publishers. 



rial Communications to the Editor. 

 iphit Address: Tin sis. London'. 

 Telephone Number Gerrard S830. 



