Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1850 edition. Excerpt: ...was tested, and shown to be much more effective than that now in use. Much time was also spent in studying the action of bromine on dimethylaniline and in trying to make orthoquinones containing the nitro group. Professor Richards began in April at Berlin the investigation of the composition of the chlorates, with the assistance of Dr. A. Staehler of Berlin and Dr. F. Kuzma of Prague. He began also the precise quantitative study of the composition of the halide salts of ammonium in order to obtain more definite knowledge concerning the atomic weight of nitrogen. In this work part was taken by Dr. P. Kothner, privatdozent in the University of Berlin; Dr. W. F. Hinrichsen of the Konigliche Materialpriifungsamt; Dr. E. Groschuff and Dr. K. Huttner, chemists of the Physikalisch-technische Reichs-anstalt; Mr. E. Tiede and Mr. H. Kessler. Dr. F. Hoffmann, also of the last named institution, studied the transition temperature of sodic sulphate and strontic chloride with the intention of using these points in standard thermometry. Dr. F. Wrede carried on a similar investigation upon manganous chloride. The transition temperature of this salt was found to be 59.089 on the international hydrogen scale, and was shown to be capable of easy and exact reproduction. Convenient apparatus was devised for carrying out the determination. A description of this latter investigation is in press, and the others will be continued in Berlin during the coming winter and, it is hoped, shortly finished. The expenses of all these investigations were met through the generosity of Geheimrat Emil Fischer and the German Government. Professor Richards has received a fifth grant of $2500 for research from the Carnegie Institution of Washington. Professor Torrey continued...
