Jan. 28, 1886] 



NA TV RE 



3-^9 



111 the Geological Department Prof. Prestwich lectures on the 

 Paleozoic series ; Prof. Story-Maskelyne on Crystallographic 

 Symmetry ; and {Dr. Tylor on Mankind, their Distribution, 

 Antiquity, and Early Condition. 



At the Botanical Garden, Prof. Bayley Balfour lectures and 

 gives practical instruction in Vegetable Morphology and Physio- 

 logy. Prof. Gilbert lectures on Field Experiments. 



Scholarships in Natural Science are ofiered this term by 

 Magdalen and Jesus Colleges, and next term by Queen's 

 College. 



The next examination for a Radcliffe Travelling Fellowship 

 will commence on Monday, February 8. 



Cambridge. — Mr. J. H. Randell, M.A., who has been 

 elected to a Fellowship at Pembroke College, was 5th Wrangler 

 in 18S2, first class in the Natural Sciences Tripos, Part II., 

 iSSj, and is now additional Demonstrator of Experimental 

 Physics. 



It is proposed by the Council that the appointments of Uni- 

 versity Lecturers shall be tenable "for such a term of years, 

 not exceeding five, as t'le General Board shall prescribe," the 

 statutable provision for cancellation remaining still in force for 

 extraordinary occasion. 



A Shuttleworth Scholarship at Gonville and Caius College is 

 vacant, and an examination for it will commence on March 19 

 next. The subjects are Botany and Comparative Anatomy in 

 its most general sense (including Zootomy and Comparative 

 Physiology), and there will be practical work in all these sub- 

 jects. Candidates must be registered medical students of Cam- 

 bridge University, and at least of eight terms' standing. The 

 Scholarship is of the value of 60/. per annum, and tenable for 

 three years. A Foundation Scholarship may be awarded to the 

 successful candidate in addition. 



In the scheme of Entrance Scholarship Examinations at 

 Girton College recently issued no Natural Science subject is 

 included in the optional subjects. One Gilchrist Scholarship, 

 tenable at Newnham or Girton, will be awarded, among other 

 groups, for proficiency in Physical and Natural Science at the 

 next Cambridge Higher Local Examination. 



Owens College, Manchester. — The following appoint- 

 ments have recently been made : — To the Brackenbury Pro- 

 fessorship of Physiology, William Stirling, M.D., D.Sc, 

 Regius Professor of the Institutes of Medicine in the University 

 of Aberdeen ; to the Lectureship in Medical Jurisprudence, 

 John Dixon Mann, M.D., M.R.C.P. 



SCIENTIFIC SERIALS 



J otirnal of the Franklin Insliiute, No. 717, September 1885. 

 — J. Sartain, on the ancient art of painting in encaustic. — Dr. 

 P. H. Van der Weyde, on the new system of telegraphy to and 

 from moving trains. This paper describes Phelps's method of 

 communicating by induction. — A. E. Outerbridge, a lecture on 

 matter. — S. W. Holnian, friction of leather belts on iron 

 pulleys ; an experimental study of the slip, and coefficients of 

 sliding friction. — A. S. Greene, on the jacketing of working 

 cylinders of steam-engines. — Otto Luthy, on Florida sugar. — 

 Pedro G. Salom, on the metallurgy of steel ; an essay on 

 Bessemer and other modern processes. 



No. 718, October 1885.— E. A. Gieseler, on tidal theory 

 and tidal prediction. — Chief-Engineer Isherwood, an account of 

 experiments on a condensing compound engine. — C. L. 

 Gateley and A. P. Kletzsch, cylinder condensation in steam- 

 engines. Gives first part of some researches made on a large 

 engine by two students of Stevens Institute. — W. Curtis Taylor, 

 three new portraits of Washington. A .study in composite 

 photography. — F. Lynwood Garrison, the microscopic structure 

 of iron and steel. Accompanying this paper are several photo- 

 lithographed plates, one of which shows the transition in struc- 

 ture of a "burned-out " fire-grate bar of cast-iron into steel by 

 the action of the fire. 



No. 719, November 1SS5. — E. A. Gieseler, on tidal theory 

 and tidal prediction (conclusion). — C. L. Gateley and A. P. 

 Kletzsch, cylinder condensation (continued). — Pedro G. Salom, 

 recent improvements in the manufacture of iron and steel. 

 Describes the " Clapp-GrifSths," the "Davy," the " Gordon," 

 and the " Avesta" processes. — Prof. E. J. Houston, glimpses 

 of the International Electrical Exhibition, No. 8. Reis's articu- 

 lating telephone. An exhaustive examination of Keis's various 



suggestions and instruments. — S. H. Needles, a translation of a 

 note of M. Blavier on the influence of electric storms on sub- 

 terranean telegraph wires. 



Wiedaiiann's Annalen, Band xxvi. No. 10, October 1885. — 

 Fr. Kohlrausch, on the conductivity of certain electrolytes in. 

 extremely dilute aqueous solutions. This paper contains an 

 historical summary of methods and results ; a discus.-.ion of the 

 method of working with alternate currents ; accounts of various 

 new experimental researches. — E. Pfeiffer, on the electric con- 

 ductivity of mixtures of ethyl-alcohol and ethyl-ether. The 

 author believes that both pure alcohol and pure ether possess 

 metallic conductivity, though both are extremely bad con- 

 ductors.— G. C. Foster, on a modified form of Wheatstone's 

 Bridge and a method of measurement of small resistances. This, 

 is a reprint of Prof. Foster's paper of 1872 in the Journal of the 

 Society of Telegraph Engineers, which appears to be unknown 

 outside England. — A. Oberbeck, on a phenomenon of electric 

 oscillations similar to resonance. This refers to the effect of 

 condensers on alternate currents recently investigated by Hop- 

 kinson. — K. Angstrom, on the diffusion of radiant heat from 

 plane surfaces. The research was made by an appai-atus called 

 a "galvanic differential thermometer," resembling Langley's 

 " bolometer." Results are given for a number of substances at 

 different angles of incidence. — A. Schleiermacher, on the de- 

 pendence of heat-radiation upon temperature and the law of 

 Stefan. These researches confirm the accuracy of Stefan's law 

 for perfectly black bodies. — M. Thiesen, on the law of the 

 resistance of air. — E. D.irn, experimental confirmation, for 

 pyro-electricity, of the law that the two kinds of electricity are 

 generated in equal quantity. — E. Dorn, some lecture experi- 

 ments. These relate to Leslie's apparatus, interference of 

 sounds, vortex-rings, Puluj's apparatus for Joule's equivalent, 

 and cooling of wire by sudden extension. — P. Briihl, on forked 

 lightning. 



No. II, November. — E. Gumlich, theory of Newton's Rings 

 in transmitted light. The author concludes that the effect of 

 multiple reflection in the air-film is to render the dark rings in- 

 completely dark in the transmitted set, and the bright rings in- 

 completely bright in the reflected set. — Leonhard Weber, 

 measurement of intensity of diffused daylight. The quantities 

 and qualities of daylight at Breslau were measured against 

 those of standard flames from December 1884 to July 1885, 

 with the following mean relative figures : — December, red 3834, 

 green 11,514; January, red6S75, green 20,447 ; June, red 51,803, 

 green 151,233; July, red 37,309, green 105,230. — W. von Be- 

 zold, on formation of the triangle of colours by tnie colour mix- 

 ture. Three shaded triangles of red, blue, and green are opti- 

 cally superposed. — W. Miiller-Erzbach, dissociation of salts con- 

 tainingwater. — F. Kohlrausch, ontheinconstancyof the damping- 

 function of a galvanometer, and its influence on the determination 

 of absolute resistance by means of the earth-inductor. — R. Colley,. 

 on some new methods for observing electric oscillations, and 

 some applications of them. To measure electric oscillations the 

 author has applied (i) a telephone receiver, (2) a mirror-oscillo- 

 meter, and (3) a gas-flame oscillometer ; descriptions of these 

 are given, with drawings. — A. Koepsel, determination of the con- 

 stants of electro-magnetic rotation of the plane of polarisation of 

 sodium light in bisulphide of carbon. Tlie apparatus was a 

 modified Lippich's half-shadow polarimeter. The result gave 

 for the absolute unit of rotation at 18° C, 0-0419913' ± 

 O'ooooo78'; in close agreement with Lord Rayleigh's value, 

 o "042002'. 



Journal de Physiqii,; t. iv., September 1885.— H. Dufet» 

 experimental researches on the variation of the indices of refrac- 

 tion under the influence of temperature. The points comprised 

 are: (i) variation of ordinary and extraordinary indices of 

 quartz ; (2) variation of index of water by prism method and by 

 method of Talbot's fringes with aid of a lamina of quartz ; (3) 

 variation of indices of fluor and of beryl by the same method ; 

 (4) variations of indices of bisulphide of carbon, of monobrom- 

 naphthaline, turpentine, and alcohol by means of a lamina of 

 quartz immersed in these liquids. The extraordinary index of 

 quartz varies about seven times as much as the ordinary index, 

 with variations of temperature. — MM. Bouty and Foussereau, 

 on theemployment of alternating currents for measuring liquid 

 resistances. They criticise Kohlrausch's methods, in which a 

 bridge and a receiving telephone are used, and show that 

 ordinary resistance coils cannot be relied upon as having no self- 

 induction. They describe a liquid rheostat, without polarisa- 



