Cellular toxins, or, The chemical factors in the causation of disease / by Victor C. Vaughan and Frederick G. Novy.

  • Victor Clarence Vaughan
Date:
1903
Catalogue details

Licence: In copyright

Credit: Cellular toxins, or, The chemical factors in the causation of disease / by Victor C. Vaughan and Frederick G. Novy. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    jgoec/men Pa«e of BJorlinn & Gissing's Now §\ jrl tmM ^Qf W' '«>^ Ele] TECHNICAL DICTIONABY-CYCLOP^DIA [Gra Electrograph.—Is an instrument for marking linen. The cloth is moistened with salt water, and a silver stamp is pressed upon it. A current of electricity is sent from the stamp to the linen and decomposes the solution, reducing silver in the tissue of the cloth, and thus indelibly marking it with the letters. Evaporative Condenser,—This class of condenser depends upon the evaporation of the steam by means of a large surface being exposed to the atmosphere and water. It consists of a large number of tubes or pipes of various designs mostly furnished with fins or gills. The quantity of circulating water required for the evaporative surface condenser is about one-third the quantity pumped for ordinary surface or jet condensers. F. Floating Outlet.—This apparatus is employed at sewage works for running off the clear efiluent, leaving the sludge at the bottom of the tanks. It consists of a hinged or swivelling arm, provided at the open end with a floating arrangement, the float of which is a hollow drum or spherical ball. As the liquid runs off, the mouth of the pipe or arm is lowered, but when the float comes against the sludge it cannot sink; hence the discharge of the liquid is stopped. Flying' Shears.—This machine has been designed to cut ingots of any size up to 9 square inches cross section while in motion, and it must complete the entire operation and be back in place within one second, so that the progress of the billet through the mill is continuous. > ko-^oI The first one constructed consisted of a simple hydraulic shear, driven at a pace to permit the knives to travel with the moving billet during the time of cutting. A second shear is operated by hydraulic power, the pressure being intensified by the aid of steam. The cutting takes place while the shear moves forward, and the length of the stroke is about 20 inches, six of which are required to sever the metal, and the remainder to bring the shear up to the speed of the billet and to stop it again. The upper knife swings on a pivot. When the shear moves as fast as, or even faster than, the billet, the knife remains in position ready for cutting; but as soon as the motion of the shear becomes slower than that of the billet, the latter pushes the knife out of the way, and the billet clears itself. G. Gravitation.—The law by which all atoms of matter are attracted one to another with a force directly proportional to the product