Journal . ld of anyparticular qualitN of raw wool, that is to say, the percentageof clean ^vool that will be obtained after washing the rawmaterial. For this puiTiose a given weight of the raw wool is com-pressed in a c> liiuler under a given pressure. An apparatusin cimnexiou ^^?ith the cylinder indicates the reduced volumeof the wool residting from the given pressure. From thisindicated volume is calculated the specific gravity of theraw material, and thus the percentage of clean woolascertained. The spejifieation is accompanied by a seriesof 10 drawings.—E. J. B. An Improeed Method of an
Journal . ld of anyparticular qualitN of raw wool, that is to say, the percentageof clean ^vool that will be obtained after washing the rawmaterial. For this puiTiose a given weight of the raw wool is com-pressed in a c> liiuler under a given pressure. An apparatusin cimnexiou ^^?ith the cylinder indicates the reduced volumeof the wool residting from the given pressure. From thisindicated volume is calculated the specific gravity of theraw material, and thus the percentage of clean woolascertained. The spejifieation is accompanied by a seriesof 10 drawings.—E. J. B. An Improeed Method of and Apparatus for Carbonisini/or Uestroijiutj Veijetalile-matter contained in or Mixedwith Woollc7i, Sil/t, or ether Animal Fibre or Fitton, .7. Fitton, jnn., and E. Fitton, Iat. 12,.)0B, September 15, 1887. 11</. The apparatus is shown in sectional elevation in thefigure. Ihe chamber .r is made of brick or other suitablematerial. The iron bars k form a scrie» of three Every alternate bar is connected to a crank motionoutside the chamber, which gives to them an up-and-dowuand to-aud-fro motion. In this way the material to betreated, which is fed into the chamber along the endlessapron o aud the rollers r and r, is carried alongthe floors and is finally discharged by the rollers t and <. During ils passage through the chamber the material isexposed to the action of hot hydrochloric acid gas. Thespecification contains other drawings illustrating completelythe method of working.—E. J. B. supt. 20,18880 THE JOUENAL OF THE SOCIETY OF CHEMICAL INDUSTRY. 621 VI-DYEING, CALICO FEINTING, PAPEESTAINING, AND BLEACHING. Communications from the Chemistnj and Dyeing Department of the Bradford Technical College, E. Knccht, Joum. Soc. Dyers and Colourists, 1888, 104—107. On the Alisiirption of Certain Acids, Bases, and Salts,by Wool, (olton and Silk. ( and S. )—It fs well known that the textile fibres,notably t
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
