The sooterkin dissected. [electronic resource] : In a letter to John Maubray, M.D. alias Dr. Giovanni. Wherein is clearly prov'd, I. That there never was such an animal in the world. II. That God never made it. III. That the Devil cannot make it. IV. That it is Impudence to assert it. V. That it is Stupidity to believe it. VI. That it is a mere Fiction of his own Brain. Vii. That it is contrary to the Opinion of the most learned Physicians and Philosophers in our Days, who maintain the Truth of Univocal Generation. By a lover of truth and learning.