We have also parks, and enclosures of all sorts, of beasts, and birds; which we use not only for view or rareness, but likewise for dissections, and trials; that thereby we may take light, what may be wrought upon the body of man. Wherein we find many strange effects; as continuing life in them, though diverse parts, which you account vital, be perished, and taken forth; resuscitating of some that seem dead in appearance; and the like. We try also all poisons, and other medicines upon them, as well of chirurgery, as physic. By art likewise, we make them greater, or taller, than their kind is; and contrary-wise dwarf them and stay their growth. We make them more fruitful, and bearing than their kind is; and contrary-wise barren and not generative. Also we make them differ in color, shape, activity, many ways. We find means to make commixtures…to have produced new kinds, and them not barren, as the general opinion is.