Note 55 — Chapter IV · The Growth of Different Organisms in a State of Purity: Their Autonomy.[49]
Frank Faulkner translation
The flask B was closed with the lamp in consequence of one of the objects of these experiments being to test M. Trécul’s experiments on the transformation of penicillium into ferment. Strangely enough, according to M. Trécul, as we shall see later on, the spores of penicillium refuse to change into ferment, if the vessels in which they are sown are not “perfectly air-tight.”