Cambridge, Trinity College MS. O.2.46. 100 folios. Paper. 222x194mm. 17th Century. A Philosophicall Key or Ocular demonstration opening and decyphering a great deale of the hidden mysteryes of Nature, partly by an experimental Conclusion, as also by an intellectual speculation. Wrighten as a Declaration unto the distrustfull and suspicious first to manyfest that the Authour flyeth on his owne Wings and then to purify the adulterat breath of spurious reports as well of the ignorant as envious person. By Rob. Flud. [Fludd] Esq., and Dr of Physick. f1 Dedication to King Jeames I. f2 Preface to the Reader, containing letters to the author (10th Aug. 1618) from Greg. Horst and (20 Ap. 1617) from Justin Helt. f19v A nosce te ipsum to the Calumniator. f39 [Text] Of the excellency of Wheate.