No. 626] HOOKE'S MICROGRAPHIA 



Having dispatched these Matters, the Author offers his Thoughts for 

 theexplKdti^ t nam Phccn mtna of the \n tun t\e In fle n n 

 from a Multiplicate Refraction of the rays of Light within the Body of 



superficies of the Air above, nor from any such exactly defin'd super- 

 ficies within the body of the Atmosphere. . . . 



He concludeth with two Celestial Observations: whereof the onr im- 

 ports, what multitudes of Stars are discoverable by the Telescope, and 

 the variety of their magnitudes ... the other affords a description of a 

 I ale in the Moon ccn j aied xMth th t of He el us in 1 Ri I ul eit 

 the Reader will find several curious and pleasant Annotations . . . 

 about the vanations m the Moon, and its gravitatmg principle, together 



Moon. 



■ibcd in this Book, the curious 



1 the Pressure of the 

 lid durinsr the time oJ 

 2. A Ilygrocoje 



iiitd ^^hlch the \o^ it «elC i i ot 

 described m the Observations touchi 

 :he means whereof this Instrument : 



making Trnils of lliat kiii.l. In ,.st;il)!isli the Laas of I{, frac1„>u. . . . 



L-x^th tl V tl 1 ] 1 1 1 t tl It tl 1 N le t ]n ^ Me 

 eh nif llmeiti toiniioxeou Sei e of 7/e j ng ^mcll ng last 

 inq ToucJ no a ^^ell a \ve ha\e improved that of Seeing h^ Optick 

 Glasses. 



Thus the ''Micrographia" is obviously something 

 more than "Some Physiological Descriptions of Minute 

 Bodies made by Magnifying Glasses"— it is a demon- 

 stration of the advantages to be gained by the use of ar- 

 tificial devices of precision in studying nature. The 

 book is replete with singular anticipations of later dis- 

 coveries and inventions by other workers and "it will 

 hardly be deny'd that there are more excellent Philo- 



