252 T^he Wisdom of GOD Part If. 



Sight of the Eye 5 it contrafts it, for the exclu- 

 ding fuperfluous Light, and preferving the Eye 

 from being injured by too vehement and lucid an 

 Objedt, and again dilates it, for the apprehending 

 Objedls more remote, or plac'd in a fainter Light; 

 iam miro artificio (faith Scheiner) quam muntfica 

 natures largitate. If any one defires to make Ex- 

 periment of thefe Particulars, he may, following 

 Scheiner and Des Cartes their Dired:ion, take a 

 Child, and fetting a Candle before him, bid him 

 look upon it, and he fhall obferve his Pupil con- 

 traft it felf very much, to exclude the Light, 

 with the Brightnefs w^hercof it would otherwife 

 be dazzled and offended 5 as we are, when after 

 we have been fome time in the dark, a bright 

 Light is fuddenly brought in and fet before us, 

 till the Pupils of our Eyes have gradually con- 

 trafted themfelves j let the Candle be withdrawn 

 or remov'd afide, he {hall obferve the Child's 

 Pupil by degrees to dilate it felf; or let him take 

 a Bead, or the like Objeft, and holding it near 

 the Eye, command the Child to look at it, the 

 Pupil will contradt much when the Objeft is 

 near; but let it be withdrawn to a greater di- 

 ftance in the fame Light, and he {hall obferve 

 the Pupil to be much enlarged. 



Fourthly^ The uveous Coat, and alfo the infide 

 of the Chorides, are blackened, like the Walls of a 

 Tennis-Court, that the Rays may be there fufFo- 

 cated and fuppreffed, and not refledted back- 

 wards , to confound the Sight -, and if any be by 



the 



