American journal of physiology . uld probably not have differed from our own if this factor had beentaken sufficiently into consideration. This factor is the normal pres- ^ Garrey: This journal, 1900, iii, pp. 291-315. Reactions of Iiiftisoria to Carbonic and other Acids. 237 ence of an acid,— a solution of carbon dioxide excreted by the organ-isms,— in the fluid in which Chilomonas occurs. Reaction to carbon dioxide. — Water containing Chilomonas isaerated in the manner above directed, and any bacterial filamentsare removed by straining through coarse cloth. It is then placed ona slide, cover
American journal of physiology . uld probably not have differed from our own if this factor had beentaken sufficiently into consideration. This factor is the normal pres- ^ Garrey: This journal, 1900, iii, pp. 291-315. Reactions of Iiiftisoria to Carbonic and other Acids. 237 ence of an acid,— a solution of carbon dioxide excreted by the organ-isms,— in the fluid in which Chilomonas occurs. Reaction to carbon dioxide. — Water containing Chilomonas isaerated in the manner above directed, and any bacterial filamentsare removed by straining through coarse cloth. It is then placed ona slide, covered, and a bubble of carbon dioxide introduced. At firstthere is no gathering of the organisms, but soon they begin to collectabout the bubble of gas, and gradually a dense ring is formed. Fig. igives the general appearance of the progress of the experiment ; itwas taken from an actual preparation. This experiment we have repeated many times, always (when theconditions were properly fulfilled) with the same results. The ex-.
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