244 



NATURE 



[January 3, 1901 



paring copper selenide, CuSe. — On some chlorobromides of 

 thallium, by M. V. Thomas. — The action of reducing agents upon 

 the two isomeric nitrodimethylacrylic esters, by MM. L. Bouve • 

 ault and A. Wahl. Of the various substances tried, the only one 

 giving a good yield of the corresponding amido-body was 

 aluminium amalgam, several derivatives of which are described. 

 — On tannase, by M. A. Fernbach. The tannase was pre- 

 pared by the action of Aspergillus Niger, and then rendered 

 sterile by filtration through porcelain. — Tannase, a diastase 

 capable of hydrolysing gallotannic acid, by M. Henri Pottevin. 

 — On the glycolysis of different sugars, by M. P. Portiere. Of 

 the sugars examined, the only ones which underwent glycolysis 

 in the presence of the blood of the dog or the rabbit were 

 galactose, Itevulose and maltose. — Study of uranium nitrate, by 

 M. CEchsner de Coninck. Densities of aqueous and alcoholic 

 solutions of uranium nitrate, together with some solubilities in 

 some other liquids. — Reaction of /-diazobenzene sulphonate of 

 sodium upon the cystinate of iron existing in contaminated 

 waters, by M. H. Causse. A reply to the criticisms of M. 

 Molinie. — On the chemical transformations which take place 

 during the evolution of the bud, by M. G. Andre. From the 

 point of view of the distribution of the mineral material and 

 organic substances, the evolution of the bud is comparable with 

 the germination of the seed. — On some derivatives of methyl- 

 nonyl-ketone, by M. H. Carette, — On the relations between 

 the chemical constitution of the sexual products and that of 

 solutions capable of determining parthenogenesis, by MM. 

 Yves Delage and Marcel Delage. The theory advanced by 

 Loeb as to the influence of magnesium salts in development 

 requires a difference in the proportion of magnesium salts in the 

 male and female. An experimental study shows that this is not 

 the case, and hence that the proposed theory is inexact. — 

 Germinative cells : male ovules and the cells of Sertoli, by M. 

 Gustave Loisel. — On the signification of the bisilar granulations 

 of cilia, by M. P. Vignon. — The physiological relations of 

 intermittent albuminuria, by M. A. Charrin. — Phagocytosis of 

 the Eberth bacillus, by MM. O. F. Mayet and J. Bertrand. 

 The authors have been able to clearly demonstrate the absorp- 

 tion of the Eberth bacillus by the white blood corpuscles. — 

 '"Cytometric and ckryometric researches on the motor nervous 

 cells after the section of their cylindraxis, by M. G. Marinesco. 

 — Remarks on the experiments of Mile. Barthelet on telegony, 

 t)y M. Edouard Rogez. — Remarks on the same subject, by M. 

 Giard. — On the parasitism of Fiisarium roseum and allied 

 species, by M., Louis Mangin. — On the cytology of the Gastro- 

 jnycetes, by M. Rene Maire. — Variations of structure in a green 

 algse, Stichococcus bacillaris, under the influence of the medium, 

 by MM. L. Matruchot and M. MoUiard. — On the development 

 of etiolated plants aftervvards turned green by light, by M, H. 

 Ricome. — Effects of annular decortication in some herba- 

 ceous plants, by M. Lucien Daniel. — On the age of the granitic 

 massif oi C&ni&XQis and Neouvielle (High Pyrenees) and of part 

 of the ancient neighbouring formations, by M. A. Bresson. — On 

 the upper Cretacean at Mozambique, by M. Paul Choffat. — The 

 ice caps of the Antarctic regions, by M. Henri Arctowski. — 

 Barometer variations and the synodic revolution, by M. A. 

 Poincare. — Atmospheric electricity according to observations at 

 the Eiffel Tower and at the central meteorological ofiSce, by 

 M. A. B. Chauveau. — On the determination of the density of 

 sea-water, by M. J. Thoulet. 



DIARY OF SOCIETIES. 



THURSDAY, January 3. 

 ^'JNTGEN Society, at 8.— Continental Progress in Practical Radiography 

 and Apparatus : A. W. Isenthal. 



FRIDAY, January 4. 

 •Geologists'Association, at 8.— The Geology of Swanage— Chapman's 

 . Pool to Punfield Cove (Kimeridge Clay to Upper Greensand) : Horace 

 - W. Monckton. 



MONDAY, January 7. 



Society of Chemical Industry, at 8.— The Early Manufacture of Sul- 

 phuric and Nitric Acids: Oscar Guttmann.— Note on the So-called 

 " Heat Test" for Explosives : W. CuUen. 



Victoria Institute, at 4.30. — Hornets: Rey. F. A. Walker. 



TUESDA Y, January 8. 

 Institution of Civil Engineers, at 8. — Glasgow Bridge ; B. H. Blyth. 

 Railway Bridge over the Fitzroy River, at Rockhampton, Queensland : 



NO. 1627, VOL. 63] 



W. J. Doak.— The Niagara Falls and Clifton Steel Arch Bridge : L. L 

 Buck. — Monthly Ballot for new members. 



WE ONES DA Y, January 9. 

 Geological Society, at 8. — The Geology of South-Central Ceylon : John 

 Parkinson. — Note on the Occurrence of Corundum as a Contact-Mineral 

 at Pont Paul, near Morlaix (Finistere) : A. K. Coomara-Swamy. 



THURSDAY, January to. 



Mathematical Society, at 5.30. — On the Singularities- of Quartic 

 Curves : A. B. Basset, F.R.S. — On Streaming Motions past Cylindrical 

 Boundaries : Prof. Love, F.R.S. 



Institution of Electrical Engineers, at 8. — Capacity in Alternate 



Current Working: W. M. Mordey. And, if time pervtit : The Use 



of Aluminium as an Electrical Conductor, with New Observations upon 

 the Durability of Aluminium and other Metals under Atmospheric Ex. 

 posure : John B. C. Kershaw. 



FRIDAY, January ii. 

 Royal Astronomical Society, at 8. 

 Institution of Civil Engineers, at 8.— Geodesy : Wilfrid Airy. 



CONTENTS. PAGE 



The New Century. Editor 221 



Recent Advances in the Chemistry of the Proteids. 



By Dr. J. A. Milroy 224 



Modern Lens Making. By R. T. G 227 



Our Book Shelf:— 



Hayes: " A Handy Book of Horticulture " .... 229 

 Hare : " The Construction of Large Induction Coils ; 



a Workshop Handbook." — A. A. C. S 229 



Miall and Hammond : " The Structure and Life 

 History of the Harlequin Fly (Chironomus)." — 



W. F. K 230 



Letters to the Editor:— 



On the Nature of the Solar Corona, with some Sug- 

 gestions for Work at the next Total Eclipse. — 



Prof. R, W. Wood 230 



The Alleged Decadence of German Chemistry. — 



S. N. C 231 



Secondary Sexual Characters.— J. T. Cunningham . 231 

 The Word Physiography. — Dr. Hugh Robert Mill 231 

 Artificial Rain.-C. H. B. Woodd; M. T. 



Tatham 232 



Progress in Metallography. {^Illustrated.) By Dr. 



T. K. Rose 232 



Some Recent Advances in General Geology. By 



H. B. W 233 



Lord Armstrong, F.R.S. 235 



William Pole, F.R.S. ....... . 236 



Notes 237 



Our Astronomical Column : — 



Heliometer Measures of h and x Persei 240 



Annuaire pour 1901 Bureau des Longitudes .... 240 



Catalogue of Stars . . . ' L':. 1 . '.■ . 240 



New Minor Planets, . .,..,. .... . . . . . . . 240 



Spain and Greenwich Tirhe 240 



The Use of Blast-Furnace Gases in Gas Engines 241 

 Prizes proposed by the Paris Academy of Sciences 



for 1901 241 



University and Educational Intelligence 242 



Societies and Academies 242 



Diary of Societies 244 



