. Laboratory work in bacteriology. Bacteriology. 250 BACTERIOLOGY. Gas-pressure regulator.—The apparatus shown in Fig. 38 was designed by Murrill > and is used in this laboratory. In cheapness, simplicity and effectiveness it excels any of the ordinary gas-pressure regulators. As indicated, the gas enters through a valve which is connected with a gas cylinder or float. The gas passes into the interior and raises this cylinder. The greater the pressure of gas the higher will the cylinder rise. As it does so, it turns off the valve, more or less completely. The cylinder then falls, and hence
. Laboratory work in bacteriology. Bacteriology. 250 BACTERIOLOGY. Gas-pressure regulator.—The apparatus shown in Fig. 38 was designed by Murrill > and is used in this laboratory. In cheapness, simplicity and effectiveness it excels any of the ordinary gas-pressure regulators. As indicated, the gas enters through a valve which is connected with a gas cylinder or float. The gas passes into the interior and raises this cylinder. The greater the pressure of gas the higher will the cylinder rise. As it does so, it turns off the valve, more or less completely. The cylinder then falls, and hence gas is readmitted. The pressure at which the gas is delivered can be regu- lated at will by placing suitable weights on the cylinder. In this laboratory, the float is weighted till the gas is delivered at a pressure of 40 mm., as observed in a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Novy, Frederick George, 1864- . Ann Arbor [Mich. ] G. Wahr
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