That it was impossible to give her Majesty an exact account thereof, by reason the circulation of blood was an interior motion, which their senses, neither of themselves, nor by the help of any Optick Instrument could perceive; but as soon as they had dissected an Animal Creature, to find out the truth thereof, the interior corporeal motions proper to that particular figure or creature, were altered. Then said the Empress, If all Animal Creatures have not blood, it is certain, they all have neither Muscles, tendons, nerves, &c. But, said she, Have you ever observed Animal Creatures that are neither flesh, nor Fish, but of an intermediate degree between both? Truly, answered both the Fish- and Worm-men, We have observed several Animal Creatures that live both in Water, and on the Earth, indifferently, and if any, certainly those may be said to be of such a mixt nature, that is, partly Flesh, and partly Fish: But how is it possible, replied the Empress, that they should live both in Water, and on the Earth, since those Animals that live by the respiration of Air, cannot live within Water; and those that live in Water, cannot live by the respiration of Air, as Experience doth sufficiently witness. They answered her Majesty, That as there were different sorts of Creatures, so they had also different ways of Respirations; for Respiration, said they, is nothing else but a composition and division of parts, and the motions of nature being infinitely various, it is impossible that all Creatures should have the like motions; wherefore it was not necessary, that all Animal Creatures should be bound to live either by the Air, or by Water onely, but according as Nature had ordered it convenient to their Species. The Empress seem'd very well satisfied with their answer, and desired to be further informed, Whether all Animal Creatures did continue their Species by a successive propogation of particulars, and whether in every Species the off-springs did always resemble their Generator or Producer, both in their interior and exterior Figures? They answered, her Majesty, That some Species or sorts of Creatures, were kept up by a successive propagation of an off-spring that was like the producer, but some were not. Of the first rank, said they, are all those Animals that are of different sexes, besides several others; but of the second rank are for the most part those we call Insects, whose production proceds from such causes as have no conformity or likeness with their produced Effects; as for example, Maggots bred out of Cheese, and several others generated out of Earth, Water, and the like. But said the Empress, there is some likeness between Maggots and Cheese; for Cheese has no blood, nor Maggots neither; besides, they have almost the same taste which Cheese has. This proves nothing, answered they; for Maggots have a visible, local, progressive motion, which Cheese hath not. The Empress replied,