Note 111 — Chapter VI · THE PHYSIOLOGICAL THEORY OF FERMENTATION.
Frank Faulkner translation
It has been remarked in practice that fermentation is facilitated by leaving the grapes on the bunches. The reason of this has not yet been discovered. Still we have no doubt that it may be attributed, principally, to the fact that the interstices between the grapes, and the spaces which the bunch leaves throughout, considerably increase the volume of air placed at the service of the germs of ferment.