Note: Project Gutenberg also has an HTML version of this file which includes the original remarkable illustrations. See 15491–h.htm or 15491–h.zip: (https://www.gutenberg.org/dirs/1/5/4/9/15491/15491–h/15491–h.htm) or (https://www.gutenberg.org/dirs/1/5/4/9/15491/15491–h/15491–h.zip) The reader of this text file should understand that words or phrases between underscores should be imagined to be set in italics. * * * * * By the Council of the ROYAL SOCIETY of London for Improving of Natural Knowledge. Ordered, That the Book written by Robert Hooke, M.A. Fellow of this Society, Entituled, Micrographia, or some Physiological Descriptions of Minute Bodies, made by Magnifying Glasses, with Observations and Inquiries thereupon, Be printed by John Martyn, and James Allestry, Printers to the said Society. Novem. 23. 1664. BROUNCKER. P.R.S. * * * * * MICROGRAPHIA: OR SOME Physiological Descriptions OF MINUTE BODIES MADE BY MAGNIFYING GLASSES WITH OBSERVATIONS and INQUIRIES thereupon. * * * * * By R. HOOKE, Fellow of the ROYAL SOCIETY. * * * * * _Non possis oculo quantum contendere Linceus, Non tamen idcirco contemnas Lippus inungi._ Horat. Ep. lib. 1. [Illustration] * * * * * LONDON, Printed by Jo. Martyn, and Ja. Allestry, Printers to the ROYAL SOCIETY, and are to be sold at their Shop at the Bell in S. Paul’s Church-yard. M DC LX V. * * * * * TO THE KING. SIR,