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Show "-1 Boolt Ill. The Errsrts,(fl"c. ou,who are {0 Candid as to pardon all Defects, ‘; and f0 Favourable as to grant a Patronage to the Studious Endeavors of C H A P. VII. of Seeing. Aving Treated of the Rife, intermedial Steps and Period H tion of Light, as it is in feveral infiances, and circum s of the mos liances perfect-a MyLORi), five of Sight; how innumerable minute Bodies Pcream out of greater Lumi- naries; and being mutually conjoyned, and not able to penetrate each other, the later {till prefling forward, the former ( Sicut unda pellit undaw ) Your Lord/bib: mall.l Humble and mo/l Obliged Servant are mofi fiviftly carried with a direct progrefs through the feveral regions of the Hemifphxre, till at [aft they attack the Atmofphazre, and caufe it to put off its dark Vail, and cloath it with bright Robes of Light ; which arriving the Center, are befiet with divers opace Bodies, whole Denfe, and more com~ pact fubfiance, cannot entertain the beams of Light into its more inward Receiles; lb that the Rays being drelTed with feveral Lineam ents and Fi- gures of Bodies are forced to retreat. And now I will lhew you how Varions'imr the Light newly 'modelled with various Shapes and Semblances of things ff: 2532,35 (which Arifiatle the Great Malter of Philofophy, calleth vifible Species; and :33me "f the Atomilis and later Philofophers, call Efliuxes of Bodies ) movet h in Pyramide, whofe Bale or greater circumference is placed in the Surfac a e of . opace Bodies; and afterward its dimenfions are more and more lefTened, as SAMuEL COLLINS. its progrefs draweth nearer and nearer to the Eye, where it termin ateth into a Cone at the Cornea. The Surfaces of Bodies moulded into variety of Schemes and Figures , receive divers ornaments of Colours, after fome manner derive d from the uncvennefies and Cavities, Which are framed into Spherical, Elliptick, Conical, » Cylindrical, and many other irregular Figures, according to the difpofition of Opacc, and pofition of lucid Bodies, which fporting in a diaphan ous QM" rm" 0 c derive Medium,are varioufly reflected from the Afperities and hollorvneiles of opace :(rcrili-ishr, d Surfaces. in which the brighter beams of Light, receive an allay from dark- zizriirnftitici" er Shades, which {cem in fome fort to conflitute the greater variety of Co- giflfffgfiff 101m, with which vifible Objects are arrayed. W"Onr prefent Difcourfe is not of Mathematical Surfaces of Bodies, which being meerly imaginary, have no Dimenfion but that of Latitude : we now Treat of Phylical Surfaces, which though they feem, according to be exaétly Polite and Plane, yet in truth by help ofa Microlcope, Senfe, to we may eafiiy difcem molt fenfible Prominencies and Deprefiions, formed ous regular, and irregular Figures, in which the Rays of Light into varido play up and down; and as being foiled with various fhadows, are productive of difw ferent Colours, wonderfully modelling vifible Objeéls, which being repre» fentecl to the Eye, give as a power to diftinguilh the different outward Faces Of OPace Bodies. The Rays of Light ( arrayed with various Figures and Colours of thingS) ,3; 327:]: {Day be cOmparcd to Lines ( {beaming out ofthe Everal points of viiible Ob- wITarc mh Jeéis, interfeéting each other in obtufe Angles,‘before they are received into fiicetiifif ""3 Pupnil of the Eye, fo that the vifory Rays, reflected obliquely from any PomtOi an opace Body, do decuiiate each other about: the forum, and that V to Ray |
