. The diagnosis of diseases of women . Dares haemoglobinometer. X ^. Parts in position: R, milled wheel rotating coloreddisk and scale; S, case inclosing disk; T, shield which receives the camera tube U V(visible portion of disk backed by white glass); W, white glass back of capillary chamber •Y, candle holder. Contents of case: E, colored disk; F, clear glass disk graduated alongedge H; I, white glass back; G, opening for pivot. (a) Eosin and Methylene Blue. Ehrlichs saturated alcoholicsolution of blood-eosin and a watery 1 per cent, solution of Ehrlichsrectified methylene blue are the requir
. The diagnosis of diseases of women . Dares haemoglobinometer. X ^. Parts in position: R, milled wheel rotating coloreddisk and scale; S, case inclosing disk; T, shield which receives the camera tube U V(visible portion of disk backed by white glass); W, white glass back of capillary chamber •Y, candle holder. Contents of case: E, colored disk; F, clear glass disk graduated alongedge H; I, white glass back; G, opening for pivot. (a) Eosin and Methylene Blue. Ehrlichs saturated alcoholicsolution of blood-eosin and a watery 1 per cent, solution of Ehrlichsrectified methylene blue are the required stains. The methylene- FiG. 29. Method of making blood smears. blue solution should not be less than one week old or more thaneight weeks. The eosin solution also deteriorates in time. Themethod of staining is simple. Eosin is poured on the dry film for 108 GENERAL DIAGNOSIS a few seconds and then washed oft* in pure water. The specimenis then immersed for one minute in methylene blue, hastily washedin water and dried. (b) Ehrlichs Triacid Stain. The method of application is verysimple. The specimen is flooded with the mixture for one to twominutes and hastily washed in water. There is no danger of over-staining. It does not bring out the nuclei well, but stains theneutrophile and eosinophile granules deep red. It is, therefore, aperfect stain for the diagnosis of leukaemia. BACTERIOLOGICAL EXAMINATIONS OF THE BLOOD. Any sterile operating needle may be used. Fig. 30 representsan instrument modified by Ewing which is recommended for its Fig. 30
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