36u 



NA TURE 



[August 12, 1897 



phonic acids into chloronaphthalenes by heating with phosphorus 

 pentachloride maybe thoroughly trusted as a meansof determining 

 constitution in the naphthalene series, inasmuch as no isomeric 

 change occurs. The chloronaphthalenedisulphonic chlorides 

 when heated with phosphorus pentachloride are converted partly 

 into dichloronaphthalenesulphonic chlorides and partly into tri- 

 chloronaphthalenes of the same orientation. — Conversion of 

 I : i'- into I : 4'-dichloronaphthalene by hydrogen chloride. 

 The products of hydrolysis of i : i'-dichloronaphthalene-3-sul- 

 phonic acid, by H. E. Armstrong and W. P. Wynne. — Note on 

 the formation of diacetanilide, by G. Young. Acetanilide is 

 readily converted into diacetanilide by boiling with excess of 

 acetic chloride.— Derivatives of phenetol azophenols, by J. T. 

 Hewitt, T. S. Moore and A. E. Pitt. In order to obtain 

 further information respecting the remarkable coloured deriva- 

 tives of benzeneazophenol, the authors have prepared and 

 examined the ortho- and para-phenetolazophenols and their 

 derivatives. — 5-Ketopinic acid and camphoic acid, by W. S. 

 Gilles and F. F. Renwick. The inactive 8-ketopinic acid 

 obiained by oxidising active pinene hydrichloride can be 

 separated into two optical antipodes by crystallising its strych- 

 nine salts ; the tribasic acid obtained by oxidising ketopinic 

 acid is camphoic acid.— Note on stereoisomeric di-derivatives of 

 camphor and on nitrocamphor, by T. M. Lowry. On bromi- 

 naiing chlorocamphor, or chlorinating bromocamphor, products 

 are obtained which seem to be isomorphous mixtures of the 

 stereoisomeric aa-chlorobromocamphors. — 



C8Hi4< 



C< 

 CO 



■CI 



Br and C«H 



Br 



Nitrocamphor is birotatory in benzene solution ; when its ben- 

 zene solution is evaporated and the residue heated on the water 

 bath, a substance is obtained which differs widely in physical 

 properties from nitrocamphor. — The interaction of ethylene di- 

 chloride and ethylic sodiomalonate, by B. Lean and F. H. 

 Lees. — Hexanaphthene and its derivatives. Preliminary 

 note, by Miss E. C. Fortey. 



Paris. 



Academy of Sciences, August 2.— M. Wolf in the chair. 

 — On the commencement of the combination between hydrogen 

 and oxygen, by M. Berthelot. The temperature at which 

 hydrogen and oxygen begin to combine has been the subject of 

 numerous researches ; but widely differing results have been 

 obtained, even by the same observers, in attempting to repeat 

 an experiment under apparently precisely similar conditions. 

 These differences are undoubtedly due to secondary reactions, 

 and the present paper is devoted to the elucidation of some of 

 these. In presence of baryta, the gases completely combine 

 at 280" in twenty-six hours. The reaction, however, is a com- 

 ^plex one, since if the experiment is stopped after five hours, 

 barium peroxide is found to be present. With caustic potash 

 analogous phenomena were observed. — On the analysis of alu- 

 ^.minium and its alloys, by M. Henri Moissan. An examination of 

 the methods of analysis of aluminium, proposed by M. Balland, 

 .has shown that the gain in speed is accompanied with a loss 

 in accuracy. The original method proposed by the author, 

 ; although tedious, is necessary for trustworthy results. — On the fix- 

 .ation and nitrification of nitrogen in arable earths, by M. P. P. 

 Deherain. — The toxic effects produced by the sweat of a healthy 

 '.man, by M. S. Arloing. It is shown that perspiration contains 

 substances of considerable toxic power, the properties of which 

 possess some analogy with some of the microbial toxines. — On 

 the symmetrical tetramethyldiamidodiphenyldianthranoltetra- 

 methyldiamide from the corresponding oxanthranol, by MM. A. 

 Haller and Guyot. The formation of this substance is easily 

 effected by the use of phosphorus oxychloride as a condensing 

 agent, although the previous attempt of O. Fischer with sul- 

 phuric acid failed. — Occultation of the group of the Pleiades by 

 the moon, July 23, 1897, at Lyons, by M. Ch. Andre.— On iso- 

 thermal surfaces, by M. A. Pellet. — Light apparatus for the 

 rapid determination of the acceleration due to gravity, by"M. 

 Marcel Brillouin. A short pendulum beating quarter seconds 

 was used, together with a chronometer the escapement of which 

 was so modified as to furnish flashes of light at known intervals 

 apart. — On permanent changes of shape undergone by glass, 

 and on the displacement of the zero of thermometers, by M. L. 

 Marchis. — On the compressibility of gases in the neighbourhood 



NO. 1450, VOL. 56] 



of the atmospheric pressure, by MM. A. Leduc and P. Sacer- 

 dote. — On the atomic weights of nitrogen, chlorine and silver, 

 by M. A. Leduc. — Thermochemical determinations relating to 

 cupric compounds, by M. Paul Sabatier. — On some bromo- 

 ketones, by M. A. Collet. — Observations on the combination of 

 some diazo-compounds with phenols, by MM. Ch. Gassmann 

 and Henry George. — On caroubinose, by M. Jean Effront. — 

 On an organic compound rich in manganese extracted from 

 ligneous tissue, by M. G. Guerin. The substance in question 

 contained 0*4 per cent, of manganese. — Presence of iodine 

 in parathyroid glandules, by M. E. Gley. The glandules 

 are small bodies attached to the thyroid gland proper 

 of the rabbit. The percentage of iodine is much larger 

 in the former than in the latter. — The eparterial bronchia 

 in the Mammifera, and especially in Man, by M. D. A. 

 d'Hardivillier. — The first stages in the development of 

 the Pedipalps, by Mdlle. Sophie Pereyaslawzewa. — Sym- 

 pathetic nervous system of the Orthoptera, by M. L. Bordas. 

 — On a new Sporozoa {Ccclosporidium chydoricola) intermediate 

 between the Sarcosporidia and the Amcebidium (Cienkowsky), 

 by MM. Felix Mesnil and Emile Marchoux. — Phagocytic organs 

 observed in some marine annelids, by Dr. J. Cantacuzene. — 

 Experimental study of the Coccidia, by M. Louis Leger. — On 

 the independence of certain bundles in the flower, by M. Paul 

 Grelot. — Reflex functional troubles of peritoneal origin, observed 

 during the evisceration of deeply anoesthesised animals, by MM. 

 L. Guinard and L. Tixier. — On the diamond-bearing rocks of 

 the Cape and their variations in depth, by M. L. De Launay. — 

 On the probable antiquity of tin mining in Brittany, by M. L. 

 Davy. The tin mines in Brittany would appear to have been 

 used by the Gauls prior to the Roman Conquest. — On the action 

 of high frequency currents from the point of view of arterial 

 tension, by M. A. Montier. — On a palliative electrical treatment 

 of facial neuralgia, by M. J. Bergonie. 



CONTENTS. PAGE 



The Breeding of Sea Fishes. By Prof. E. Ray 



Lankester, F.R.S 337 



The Calculus for Engineers. By Prof. O. Henrici, 



F.R.S 338 



Travels in the Interior of South Africa 340 



Our Book Shelf:— 



Maoh : " Contributions to the Analysis of the Sensa- 

 tions."— /z' 340 



Deakin: " Euclid, Books I. -IV." 341 



" The Voyages made by the Sieur D. B. to the Islands 

 Dauphine or Madagascar and Bourbon or Mas- 

 carenne in the Years 1669, 1670, 1671, and 1672" . 341 

 Hatschek and Cori : " Elementarcurs der Zootomie in 



fiinfzehn Vorlesungen " 341 



Letters to the Editor : — 



Cyclone Sail. (Illustrated.)— P&Tcy S. "PilchGT . . 342 

 A Hertz- Wave Model, (/llustrated.) — Prof. Silvanus 



P. Thompson, F.R.S 342 



Blackbird's Nest appropriated by a White Wagtail — 



G. W. de P. Nicholson 343 



The Royal Society and its Hand-books. By X. . . 343 

 Soaring Flight, {illustrated.) By^Dr. William J. S. 



Lockyer- 344 



The Calcutta Earthquake. {Illustrated.) 346 



Notes 346 



Our Astronomical Column :— 



Sunspots and the Mean Yearly Temperature at Turin . 350 



Recent Contributions to Astronomy 350 



The August Meteors 35° 



The Algol Variable Z Herculis 350 



Reproduction of Cometary Phenomena 350 



Some Problems of Arctic Geology. II. By Dr. J. 



W. Gregory 351 



The Iron and Steel Institute 352 



On Practically Available Processes for Soldermg 



Aluminium in the Laboratory. By A. T. Stanton 353 

 The Study of Natural History in Japan . . .... 354 



1 he Worship of Meteorites. By the late Prof. Hubert 



A. Newton • • • 355 



University and Educational Intelligence 359 



Societies and Academies 359 



