Now whereas some alledge that spirits are lighter substances, and naturally ascending, do elevate and waft the body upward, whereof dead bodies being destitute, contract a greater gravity; although we concede that spirits are light, comparatively unto the body, yet that they are absolutely so, or have no weight at all, we cannot readily allow. For since Philosophy affirmeth, that spirits are middle substances between the soul and body, they must admit of some corporiety, which supposeth weight or gravity. Beside, in carcasses warm, and bodies newly disanimated, while transpiration remaineth, there do exhale and breath out vaporous and fluid parts, which carry away some power of gravitation. Which though we allow, we do not make answerable unto living expiration; and therefore the _Chicken_ or _Mice_ were not so light being dead, as they would have been after ten hours kept alive; for in that space a man abateth many ounces. Nor if it had slept, for in that space of sleep, a Man will sometimes abate fourty ounces; nor if it had been in the middle of summer, for then a Man weigheth some pounds less, then in the height of winter; according to experience, and the statick Aphorisms of _Sanctorius_. Again, Whereas Men affirm they perceive an addition of ponderosity in dead bodies, comparing them usually unto blocks and stones, whensoever they lift or carry them; this accessional preponderancy is rather in appearance then reality. For being destitute of any motion, they confer no relief unto the Agents, or Elevators; which makes us meet with the same complaints of gravity in animated and living bodies, where the Nerves subside, and the faculty locomotive seems abolished; as may be observed in the lifting or supporting of persons inebriated, Apoplectical, or in Lypothymies and swoundings. Many are also of opinion, and some learned Men maintain, that Men are lighter after meals then before, and that by a supply and addition of spirits obscuring the gross ponderosity of the aliment ingested; but the contrary hereof we have found in the trial of sundry persons in different sex and ages. And we conceive Men may mistake if they distinguish not the sense of levity unto themselves, and in regard of the scale or decision of trutination. For after a draught of wine, a Man may seem lighter in himself from sudden refection, although he be heavier in the balance, from a corporal and ponderous addition; but a Man in the morning is lighter in the scale, because in sleep some pounds have perspired; and is also lighter unto himself, because he is refected.