Abstract
IN view of Audus's communication1, which describes a modification of my original design of perfusion pump, it is perhaps relevant to note that I simplified the apparatus myself more than two years ago. The simplified apparatus was, as Audus's, actuated by unidirectional air flow and was used for months in experiments that demanded a control of composition of the inflowing gas. It also incorporated the idea of using air-flow through a capillary to regulate an air-pressure difference. This modified design is described in an addendum to some forthcoming papers by Dr. Quastel and myself2.
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References
Nature, 158, 419 (1946).
Biochem. J., in the press.
J. Agric. Sci., in the press.
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LEES, H. Soil Perfusion Apparatus. Nature 158, 674 (1946). https://doi.org/10.1038/158674b0
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DOI: https://doi.org/10.1038/158674b0
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