CHEMISTRY. ^71 



l»loyecl |2KC10:,= KC104-}-KCl + 03] doeis not truly represent the lacts, 

 Hiui proposes thefollowing: 10KClO:,=(5KClO4+4KC] + 3O2. Theauthor 

 oontirms the stateiiicnit that when Mn02 is heated with the KCIO3 no 

 pt'rchh)rate is lornied. The phenomena noted appear to indicate that the 

 niok'cular weight of tiiesalt is mucli higher than is required by the for- 

 nmla KClOy. {J. Ghem. Soc. Lond.) 



New reasons for considering hquid or solid sulphur trioxide as iSaOs 

 rather than SO3 are afforded by the results o( experiments rej^orted by 

 Di'. E. Divers and T. Shimidzu upon the reactions of pyrosulphuric acid 

 with silver, mercury, and copper. When freed carefully from moisture, 

 snlphiu' trioxide is without action on these metals, unless a little sul- 

 phuric acid be present. The reaction with silver is as follows : 



(SO,)Sl)4+2Ag=Ag,S04+SOV 



{(Jhem. News.) 



By heating in sealed tubes glucose with strong ammonia and subse- 

 quent treatment with solvents C. Tauret obtained two new alkaloids, 

 which he calls, respectively, a-glucosine and /S-glucosine. These form 

 volatile colorless liquids, with a peculiar strong odor, the first boiling 

 at 136° and the second at 160°. In acid solution they are precipitated 

 by the usual reagents for alkaloids ; with hydrochloric acid they form 

 hydrochlorates. {Ball. hoc. chim., xliv, 102.) 



Professor Carnelley and James Schlerschmaun have investigated the 

 influence of strain on chemical action. Working with copper wires free 

 and under strain, exposed to the action of ammonium chloride, they 

 come to the conclusion that strain exerts no i)erceptible influence upon 

 chemical action under the conditions described. {Chem. Neics, lii, 6.) 



The causes of the decrepitations in samples of so-(;alled explosive 

 pyrites have been studie<l by B. Blount and formulated as follows : (1) 

 The decrepitations are due to the presence of CO2, together with more 

 or less H2O. (2) The CO2 is confined at high pressures i)rol)ably suffi- 

 cient to liquefy it. (3) The usual temperature at which the pyrites be- 

 gins to decrepitate is 30° to 36° 0. {Chem. News, Lii, 7.) 



The removal of micro-organisms from water forms the subject of a 

 valuable paper by Dr. Percy F. Fraukland, in the Chemical News, Lii, 

 '21, et seq. 



Chlorochromic acid is prepared, according to H. Moissan, by bringing 

 together gaseous hydrochloric acid and pure chromic anhydride per- 

 fectly free from sulphuric acid. On warming red fumes ai)pear, which 

 condense into chlorochromic acid ; but a portion is decomposed by the 

 water formed at the same time. Dry chlorine does not attack chromic 

 anhydride. Gaseous hydrobromic and hydriodic acid do not form analo- 

 gous chromium compounds. ( Bull, cle l^ Assoc, des t^leve^ dc M. Freiny, 2.) 



Cocaine, the established aniesthetic, according to G. Calmels and E. 

 Gossin, is " methylicbenzometholethyltetrahydropyridiue carbonate." 

 {Comptes rendus, c, No. 17.) See Professor Odling's Plea for Empiric 

 Names, in this report, under the head "Organic." 



