of-these

Updated: July 20, 2026

In each of-these cultures he counted the rows of the seeds on the ears of all the plants when ripe, and calculated their average. This average, of course, does not necessarily correspond to a whole number, and fractions should not be neglected. According to Vilmorin's rule he always found some progression of the average and some regression.

Hugo de Vries - Species and Varieties, Their Origin by Mutation