Filtration of Plant Viruses

Abstract

FOLLOWING upon the publication of the interesting letter from Mr. MacClement and Dr. Henderson Smith upon the above subject,¹ it may be worth while recording the results of some similar work in this direction. During the past nine months, I have been filtering two potato mosaic viruses, X and Y,² by means of the same collodion membrane technique developed by W. J. Elford. This work has been carried out at the Molteno Institute at Cambridge under the direction of Prof. D. Keilin, to whom I am deeply indebted, I wish also to express my thanks to Dr. W. J. Elford for much assistance willingly given.