Clinical diagnosis : the bacteriological, chemical, and microscopical evidence of disease . cytometer themean error is not greater than per cent.] * Sadler,11 working in the authors clinic, has found that Bizzozerosinstrument gives very accurate results. Oertel73 has applied it in a very scientific manner to determine the coefficient of density of the blood. It is necessary to mention herede Thierrys haemospectroscope u as an instrument of which the authorand the editor have as yet no personal experience. * The instrument may be obtained from F. Koristka, Via Circo, 14, Mfian, andcosts thi
Clinical diagnosis : the bacteriological, chemical, and microscopical evidence of disease . cytometer themean error is not greater than per cent.] * Sadler,11 working in the authors clinic, has found that Bizzozerosinstrument gives very accurate results. Oertel73 has applied it in a very scientific manner to determine the coefficient of density of the blood. It is necessary to mention herede Thierrys haemospectroscope u as an instrument of which the authorand the editor have as yet no personal experience. * The instrument may be obtained from F. Koristka, Via Circo, 14, Mfian, andcosts thirty-five lire. 2 2 THE BLOOD (d.) v. Fleischls Hsemometer.*—The application of this instru-ment (fig. u) depends upon the principle that the colour of the blooddiluted with water may be compared with that of a glass wedge tintedwith Cassiuss golden-purple, or some such pigment. Its essential part is the red glass wedge, which is mounted movablybeneath a platform like that of a microscope, with a circular opening inits centre. Upon this the light from a gas or oil lamp (daylight is not. FIG. ii.—Yon Fleischls Iliiinometer. admissible) is projected by a plate of plaster of Paris. Above thewedge, and exactly over the circular opening in the platform, is fixed ametallic tube i J cm. long, closed at the bottom with a plate of glass, anddivided by a vertical metallic partition, so that one-half of the metallictube receives its light through the red glass wedge, the other directlyfrom the white reflector. When the apparatus is in use, the former of * Von Fleischls instrument is made by Reichert of Vienna, and sold for thirty-five florins. VON FLEISCHLS H^MOMETER 23 these compartments is filled with pure water, the other with water mixedwith a known quantity of blood. To secure this known quantity, von Fleischl has designed an auto-matic blood pipette of such a capacity that, when healthy blood is used,the resulting mixture corresponds in colour to that derived from the partof the
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Keywords: ., boo, bookcentury1800, bookdecade1890, booksubjectclinicalmedicine
