. A manual of clinical diagnosis by means of microscopical and chemical methods, for students, hospital physicians, and practitioners . rate in an atmosphere free fromammonia. One gramme of the pigment, which crystallizes inreddish-brown, glistening platelets, is dissolved in 1000 of 45per cent, alcohol; in this solution strips of fine Swedish filter-paperare soaked and then allowed to dry. As a normal solution of tartaric acid contains 75 grammes to theliter (see page 22), a -^ normal solution will contain 3 grammes,and 1 of the -gV normal solution will correspond to of
. A manual of clinical diagnosis by means of microscopical and chemical methods, for students, hospital physicians, and practitioners . rate in an atmosphere free fromammonia. One gramme of the pigment, which crystallizes inreddish-brown, glistening platelets, is dissolved in 1000 of 45per cent, alcohol; in this solution strips of fine Swedish filter-paperare soaked and then allowed to dry. As a normal solution of tartaric acid contains 75 grammes to theliter (see page 22), a -^ normal solution will contain 3 grammes,and 1 of the -gV normal solution will correspond to of sodium hydrate. Supposing, then, that 10 of the -^ normal solution werenecessary to neutralize the 5 of blood, the alkalinity of these in terms of sodium hvdrate would correspond to gramme,and the alkalinity of 100 of blood to X 20 = —i. <?., to 320 mgrms. Engels Method.—This is essentially a modification of Lowysmethod, and is well adapted for clinical purposes, as the amount ofblood which is required for a single examination can readily beobtained by ordinary puncture. Fig. Ensrels alkalimeter. The blood is measured and rendered lake-colored in a speciallyconstructed pipette (Fig. 1). To this end, the blood is drawn tothe mark and diluted with neutral, distilled water, so thatthe volume of the mixture reaches the 5 line. After slight CHEMICAL EXAMINATION OF THE BLoon. 25 agitatioo the solution is placed in a small beaker and is titratedwith a J% normal solution of tartaric acid, from a special burettewhich accompanies the pipette. This is so constructed thai each cubic centimeter is divided into twenty parts. Before and alter theaddition of every drop of the titrating fluid the reaction of themixture is tested by placing a drop upon Lowys lacmoid paper (seeabove). The end-reaction is reached when the yellow drop of theblood mixture shows a distinct red line along the margin. The resultis expressed in terms
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdiagnos, bookyear1902
