. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. The Catalytic Action of Platinized Asbestos 223 In all cases where the presence of suspected micro-organisms is to be demonstrated, it is necessary to make both aerobic and anaerobic cultures. For routine work of this kind, this method of Wright is probably the most convenient yet suggested. 6. The Catalytic Action of Platinized Asbestos upon Hydrogen and Ojcygen.âThis method seems to have originated with Laidlaw (British Medical Journal, March 20,1915)
. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. The Catalytic Action of Platinized Asbestos 223 In all cases where the presence of suspected micro-organisms is to be demonstrated, it is necessary to make both aerobic and anaerobic cultures. For routine work of this kind, this method of Wright is probably the most convenient yet suggested. 6. The Catalytic Action of Platinized Asbestos upon Hydrogen and Ojcygen.âThis method seems to have originated with Laidlaw (British Medical Journal, March 20,1915) who tried porous platinum, colloidal platinum, and colloidal platinum and sodium formate in vaxious ways for the absorption and combination of the oxygen. His preference was for the method in which porous platinum was used as a catalysant, which is, briefly, as follows: â "Short pieces of platinum wire are fixed into glass holders at the blow-pipe and the free ends are wrapped tightly round small pieces of gas carbon or other porous material which will char readily and secured by twisting round the main piece of wire. These pieces of carbon are then heated in the flame from a Bunsen burner to expel the air, and dipped while still hot into a strong solution of platinic chloride. After soaking for some time, they are removed and dried over the flame. They are then heated red hot and redipped and the process repeated two or three times. It will be found theii that, on removal from the / ;:.i j o flame, the reduced platinum on the surface of the carbon < '' " ^âi will absorb sufiScient oxygen from the air to keep the \ / mass a dull red until all the carbon is burned away. . \ Iâc The glass is cut short and pushed into the center of a cork. . Suppose that an anaerobic culture is desired on a blood agar slope in a test-tube. The tube is infected in the usual way. It is turned upside down and the cotton-wool plug removed. A sterile glass capillary tube connected with
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbacteri, bookyear1919
