Composition of Interveinal Mosaic of Potatoes

IN a recent paper from Madison, Wis., Koch and Johnson1 state that they have found in interveinal mosaic of potato received from this laboratory a “streak” (Table VII) which is presumably identical with the new virus described in the text (p. 45) as “potato streak virus”. We had already found in 1933 and 1934 that this interveinal mosaic results from the… (More)