Note 179 — Chapter VII

F. Lillie thinks that the KCN in this experi­ment merely inhibits the change of the cortical layer necessary for development. This is contradicted by two facts: first, the writer has shown in 1906 that KCN does not inhibit the membrane forma­tion, and, second, the eggs will not return to the resting stage when put back into sea water too soon; in that case they will disintegrate. This shows that in the KCN something more happens than the mere block to disintegra­tion.