Note 313 — LETTER XXI.
Reading edition
The penetrating genius of Lord Verulam discovered in a great degree the cause of this vitality. "They stirre," says he, speaking of insects, "a good while after their heads are off, or that they be cut in pieces; which is caused also for that their vital spirits are more diffused thorowout all their parts, and lesse confined to organs than in perfect creatures." Sylv. Sylvar. cent.. vii. § 697.