Philosophical observations on the analogy between the propagation of animals and that of vegetables: in which are answered some objections against the indivisibility of the soul ... drawn from the late ... experiments upon the polypus ... With an explanation of the manner in which each piece of a divided polypus becomes another perfect animal Philosophical observations on the analogy between the propagation of animals and that of vegetables: in which are answered some objections against the indivisibility of the soul ... drawn from the late ... experiments upon the polypus ... With an explanation of the manner in which each piece of a divided polypus becomes another perfect animal