. The clinical pathology of the blood of domesticated animals. Blood; Veterinary medicine. 12 METHODS OF EXAMINATION The error in use does not amount to more than ten per cent. This instrument is sufficiently accurate for ordinary cHnical work. Gower's hemoglobinometer. This instrument consists of two sealed glass tubes containing glycerin tinted with picrocarmine to represent the tint of a one per cent, solution of normal blood. One of these tubes, marked with a white dot, is for use by daylight and the other, marked by a black dot, for use by candle light. Besides these tubes there is a tube
. The clinical pathology of the blood of domesticated animals. Blood; Veterinary medicine. 12 METHODS OF EXAMINATION The error in use does not amount to more than ten per cent. This instrument is sufficiently accurate for ordinary cHnical work. Gower's hemoglobinometer. This instrument consists of two sealed glass tubes containing glycerin tinted with picrocarmine to represent the tint of a one per cent, solution of normal blood. One of these tubes, marked with a white dot, is for use by daylight and the other, marked by a black dot, for use by candle light. Besides these tubes there is a tube of similar size graduated into 140 parts, each of which contains 20 cmm., a capillary pipette marked at 20 cmm. and a block for holding the tubes when making the comparison. Method of using. The blood is drawn into the pipette to the mark 20 cmm., the outside wiped off and the contents expelled into the diluting tube, which should contain a lit- tle distilled water. The inside of the pipette is rinsed out by alternately drawing in and expelling water from the tube. While expelling blood or water from the pipette the point of the pipette should be raised slightly above the surface of the water in the tube to avoid blowing bub- bles. Rinsing the pipette also serves to mix the blood with the water. After rinsing the pipette, water is added gradually to the diluted blood in the tube until it is of the same tint as the standard tube. The blood and water should be mixed by closing the tube with the thumb and inverting it several times. Do not shake the tube and produce bubbles in it as bubbles will render it difficult to read the amount. Comparison is made by placing both the standard tube and the diluted blood in the block and viewing them by reflected light. It is better to hold a paper or other white background behind the tubes and let the light fall. Fig. 7. Gower's Please note that these images are extracted from scanned page images that may have been digital
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