New Researches on the Bromo-boracites.-G. Rousseau and H. Allaire. The author describes the bromoboracites of magnesium, zinc, cadmium, manganese, cobalt, and nickel.

Iufluence of Pressure on the Combination of Hy. drogen and Selenium.-H. Pélabon.-The author's results show that an augmentation of pressure increases very slightly the quantity of hydroselenic acid produced at a given temperature. This influence is most felt at the lowest temperature.

A Reaction of the Aldehyds. Differentiation of the Aldoses and Cetoses.-A. Villiers and M. Fayolle. -This paper will be inserted in full.

Substitutions of Alcoholic Radicles Linked to Carbon and to Nitrogen.-C. Matignon.-A reclamation of priority as against H.H. Stohmann and Langbein. On Piceine, a Glucoside of the Leaves of Pinus picea.-M. Tanret.-Piceine, hydrated or anhydrous,

NEWS

New Zealand), O. F. C. Block (Finsbury Technical College and student under J. Hodgkin, F.I.C.), W. C. Carter (Finsbury Technical College), W. Crossley (Royal College of Science, Dublin). W. R. Hardwick and J. Harger (University College, Liverpool), J. A. Hatfield (Mason College, Birmingham), G. H. Perry (Royal College of Science, London), W. Ralston (Glasgow and West of Scotland Technical College), A. Ross and H. C. Seabrooke (Finsbury Technical College), T. C. Sharrott (Mason College, Birmingham, and Royal College of Science, London), E. A. Warmington (Mason College, (Glasgow and West of Scotland Technical College). The Birmingham, and Leipzig University), and J. T. Whitton Examiners were Professor Wyndham R. Dunstan, M.A., F.R.S., F.I.C., and Mr. Thomas Fairley, F.R.S.E., F.I.C. The Members of the Institute now number over 850, and there are over 200 Registered Students.

boiling water and in 50 parts at 15°, in 20 parts of alcohol at 70°, 68 parts at 90°, and 534 parts of absolute alcohol in the cold (15°), 33 parts of absolute boiling alcohol, and 123 parts of acetic acid at 15°. It is insoluble in ether and chloroform. Piceine is lævo-rotatory: ap = -84° in solution in water and αD = - 78° in solution in alcohol at 70°. Anhydrous piceine melts at 194°. Under the action of emulsine piceine fixes a mol. of water and is split up into glucose, C6H12O6, and piceol, C8H8O2. Piceine is neither precipitated by tannin nor by basic lead acetate. Piceol behaves as a monatomic phenol.

Presence of Hydrogen and Hydrogen Monocarbide in the Residual Nitrogen of Blood.-D. de SaintMartin.-1 litre of ox-blood yield at o° and 760 pressure

Hydrogen..

1. 0'41 C.C.

II.

o'64 c.c. Hydrogen monocarbide.. o'69,, 0'68 19 Action of Sulphuric Acid upon Camphene.-G. Bouchardat and J. Lafont.-The products of the reaction are the ether of the borneol of inactive camphene, the borneol sulphuric acid yielding on further saponification the borneol of inactive camphene, and lastly a small quantity of the polymers of camphene.

Bromo-derivatives of Perchloric Ethylene.-A. Besson. Not adapted for useful abstraction.

Novel Organo-Metallic Compounds.-G. Perier.The author describes the acetanilide-aluminium chloride, the butyranilide-aluminium chloride, and the compounds of butyranilide and of acetoparatoluidine with aluminium chloride.

Formation of Succinic Acid and of Glycerin in Alcoholic Fermentation.-J. Effront.-The chief quantities of glycerin and of succinic acid are formed when the fermentive power of the yeast is almost exhausted.

Influence of Chlorides upon Nitrification.-J. Crochette and J. Dumont.-Soils which have received potassium chloride in the proportion of o'50 grm. per kilo. nitrify twice better than normal soil which has been freed by washing from calcium chloride. This explains why in rainy years chlorides are favourable, whilst in dry seasons this effect is null and positively hurtful.

MISCELLANEOUS.

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ISATION OF base bulLION. By Dr. H. O. HOFMAN. Third Edition, 1893. Price 30s, Containing 275 specially prepared Illustrations reproduced from working drawings, &c. "As a complete epitome of recent practice in lead smelting this book will be gladly welcomed by the whole metallurgical world.”— Industries.

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