i68 



NA TURE 



[December 18, 1902 



On a dark chamber for three-colour photography, by M. Prieur. 

 The problem to be solved was to devise a mechanism which, on 

 closing I he shutter, would remove the exposed plate and at the 

 same time replace it by the succeeding plate, placing the 

 latter accurately in the focus of the objective. This problem 

 has been satisfactorily solved. — On bipolar electrodes 

 with a soluble anode, by MM. Andre Brochet and C. L. 

 Barillet. In an electrolytic cell containing a solution of 

 copper sulphate, the interposition of an insulated copper plate 

 gives results very similar to those previously described with a 

 platinum plate. It was not found possible to predict the 

 phenomenon in any given case. — On thallic chloride, by 

 M. V. Thomas. The chloride T1CI 3 , 4H 2 can be dehydrated 

 in a vacuum without any loss of chlorine. The properties of the 

 anhydrous chloride are given. — On Gmelin's violet manganese 

 metaphosphate, by M. Ph. Barbier. — Addition derivatives from 

 cyclohexene, by M. L. Brunei. — On a dichlorhydrate and 

 dibromhydrate of cadinene and on a dextrorotatory regenerated 

 cadinene, by M. Emilien Grimal. — On the essence of vetiver, by 

 MM. P. Genvresse and G. Langlois. This essence contains a 

 sesquiterpene, a sesquiterpene alcohol, and an ester to which the 

 odour is due. — On the excretion and variation of the kidney in 

 carnivorous fowls of the second generation, by M. Frederic 

 Houssay. — The formation of chlorophyll in rarefied air and in 

 rarefied oxygen, by M. Jean Friedel. In air expanded to one- 

 sixth of the atmospheric pressure, the leaves of Phaseolus are 

 almost entirely etiolated ; in oxygen at the same pressure, the 

 leaves are coloured as in ordinary air. It would thus appear 

 that the relative pressure of the oxygen is the predominating 

 factor, the total pressure having no sensible influence. — On some 

 new fossil infusoria, by M. B. Renault. — On the immunisation 

 of the lettuce against the fungus Bremia Lactucae, by 

 M. E. Marchal. By treatment with solutions of copper 

 sulphate of certain strength, it was found possible 

 to prevent the growth of the parasite from interfering with the 

 growth of the plant. The narrow margin, however, between 

 the immunising dose of copper sulphale and that capable of 

 acting injuriously on the lettuce plant renders the practical 

 application of these results difficult. — Some mineralogical 

 observations made on the products from the burning of St. 

 Pierre, Martinique, by M. A. Lacroix. — On the Paleozoic 

 earths of Oued Saoura and Gourara, by M. E. F. Gautier. — 

 On economic appreciation and improvements due to cultiva- 

 tion, by M. E. Rabate. — On the application of chemical manures 

 to the cultivation of the vine in the calcareous earths of 

 Charentes, by MM J. M. Guillon and G. Gouirand. — On some 

 exotic Graminaceie employed in food, by M. Balland. — On some 

 brilliant red sunsets observed at Athens during the months of 

 October and November, 1902, by M. D. Eginitis. 



New South Wales. 



Linnean Society, October 29. — Mr. J. H. Maiden, pre- 

 sident, in the chair. — On two remarkable Sporocysts occurring 

 in Mytilus latus, on the coast of New Zealand, by Prof. 

 W. A. Haswell, F.R.S. — (1) On Eucalyptus polyanthemos, 

 Schauer ; (2) on E. bicolor, A. Cunn, by Mr. J. H. Maiden. 

 The author quotes the original descriptions of the species, cites 

 their synonyms, discusses their affinities and gives an account 

 of their range. — Contributions to a knowledge of the Australian 

 flora, part iv., by Mr. R. T. Baker. A number of new 

 localities for species are recorded, thus extending their known 

 geographical range. — Notes on the botany of the interior of 

 New South Wales, part vii., by Mr. R. H. Cambage. The 

 conspicuous vegetation of the country between Forbes and 

 Bathurst is described. — On the mammalian and reptilian 

 vomerine bones, by Dr. R. Broom. The author shows that 

 in the early stages of development the nasal capsules of the 

 lizard and marsupial are essentially similar in structure and 

 that in both a well-developed paraseptal cartilage runs by the 

 base of the septum from the nasal floor cartilage in front to the 

 hinder part of the capsule. He also shows that the so-called 

 "vomer" in the lizard develops in connection with this car- 

 tilage ; and as the dumbbell-shaped bone in Ornithorhynchus 

 and the median bone of Miniopterus also develop as splints to 

 the paraseptal cartilages (specialised as cartilages of Tacobson), 

 he concludes that these mammalian bones are homologous with 

 the so-called "vomers" of the lizard and are therefore really 

 prtvomers. 



NO. 1729, VOL. 67] 



DIARY OF SOCIETIES. 



THURSDAY, December 18. 

 Linnean Society, at 8. — Notes on Copepcda frcm the Faeroe Channel : 



Thos. Scott. — Amphipoda of the Southern Cross Antarctic Expedition ; 



Alfred O. Walker.— The Deep-Sea Hoped Ar.uius Iranchiatus, Bedd. : 



Dr. H. J. Hansen. 

 Institution op Electrical Engineers, al 8.— Notes of Recent 



Electrical Designs : W. B. Esson. 



FRIDA y, December 19. 

 Institution of Civil Engineers, at 8. — Electricity Supply from Double 



Current-Generators : P R. Wray. 

 Institution of Mechanical Engineers, at 8.— Recent Practice in 



the Design, Construction and Operation of Raw Cane Sugar Factories in 



the Hawaiian Islands : I. N. S. Williams. 



TUESDA V, December 23. 

 Institution of Civil Engineers, at 8.— Paper to be further dis- 

 cussed: — The Rupnarayan Bridge, Bengal-Nagpur Railway: S. Martin- 

 Leake. — Paper to be read: — Electric Automobiles: H. F. Joel. 



CONTENTS. page 



Prof. Giglioli's Collection Illustrating the Stone 



Age 145 



Explosion Motors. By C. R. D'Esterre 145 



Marignac and his Work. By W. R 146 



A Manual of Physical Geography. By Prof. 



Grenville A. J. Cole 147 



A Pictorial Arithmetic 147 



Our Book Shelf:— 



Talbot: "The Trees, Shrubs and Woody Climbers 



of the Bombay Presidency " 148 



Meunier : " La Geologie generale " 148 



" The Student's Handbook to the University and 



Colleges of Cambridge" 149 



Bowhill : "Bacteriological Technique and Special 



Bacteriology " 149 



Belcher: " Practical Electricity."— M. S 149 



Van 't Hoff : " Acht Vortrage liber physikalische 



Chemie " 149 



Letters to the Editor: — 



Secular Changes of Climate.— Prof. T. G. Bonney, 



F.R.S 150 



The Government Grant for Scientific Research. — 



Prof. R. T. Hewlett 150 



The Unconscious Mind.— Dr. A. T. Schofield ; W. 



McD 15° 



The University of Liverpool 151 



The Minnesota Seaside Station. {Illustrated.) . . . 152 



Mr. Carnegie's St. Andrews Address. By R. G. 153 

 The Jubilee of Lord Lister. By Prof. R. T. 



Hewlett IS4 



Notes • 155 



Our Astronomical Column : — 



Comet 1902 b (Giacobini) 158 



New Variable Stars 1 58 



Herschel's Nebulous Regions of the Heavens . ... 158 



New Minor Planets ■ 158 



Elements and Ephemeris of Comet 1902 d 159 



"Companion to ' The Observatory,' 1903" .... 159 

 Jupiter and his Great Red Spot. By W. F. Den- 



ning '59 



Some Limits in Heavy Electrical Engineering. By 



James Swinburne 159 



Duty-Free Alcohol for Scientific Purposes .... 164 



University and Educational Intelligence 164 



Societies and Academies I&5 



Diary of Societies 16& 



