The Author is anonymous, but dedicates his treatise to Signor Malpighi , he first takes notice of the opinion of the Scholes which taught two sorts of Generation, either by the seed of the Animal or Spontaneous out of Corruption, and sayes the Modernes reduce those two to one, and having observed the uniformity of nature in most of her works, have gone yet farther, and ventured to prove that the general universal productive principle of all Species is Ex ovo , and this he endeavours to puriue in the workes of the Ancients as well as modern, and out of Scripture as well as Philosophy; but one passage is remarkable out of Hippocrates in his book de Natura pueri , where relating the case of a young Woman, who in dancing Miscarried of a Fœtus of fix days old.