Note 161 — Chapter III · THE RATE OF GROWTH (continued 2)
Reading edition
Schmankewitsch has made other interesting observations on change of size and form, after some generations, in relation to change of density; e.g. in the flagellate infusorian Anisonema acinus, Bütschli (Z. f. w. Z. XXIX, p. 429, 1877).