Microbic Respiration: I. The Compensation Manometer and Other Means for the Study of Microbic Respiration

A compensation manometer is described which permits observation of the pressure changes taking place in a culture. The study of cultures in different gases, or in varying mixtures of gases, is made practicable. A manometric method of analysis of the gas exchange due to organisms is developed. The buret method of analysis is described in detail, with procedures for sampling the gas content. An accurate process is given for the determination of the CO₂ taken up by the culture medium. The correct interpretation of analytic values is considered with its bearing on the true respiratory or oxygen quotient and on the true hydrogen quotient.