269. 
2706 
271. 
272. 
268. . 
| that is the moft remarkable ; as that whereupon many fialler differences | 
}do depend; Namely,that Vifibles (except Lights) are carriedin Right Lincs, | 
| and Audibles in Arcuate Lines. Hence it cometh to pafs, that Vifibles do | 
| faid before. 
| of a perfon very credible, (who himfelf was cured of a Catara& in one off 
£73. 
Diflent of Vifibles and Audibles oe 
of 
He Species of vifibles, fein to be Emifions of Beans reand the Ob i dee D 
almoft like Odors, {ave thatthey are more incorporeal; bart ee i 
of eAudibles, feem to participate more with Local Azotion, like Percigfions ot Tm- 
prefions made upon the c4ir. Sothat whereas all Bodies do feem to aes in | H 
two manners, Either by the Coninunication of theit Natures, or by elm 
preBions and Signatares of their C%otiovs. The Diffufion of Species Dann 
feemeth to participate more of the former Operation, andthe Pee faite | 
of the later. 
The Species'of Audibles feém to be carried moré manifeftly hor the | 
Ait, than the Species of Vifibles:, For (I-conceive) thar acontrary ftrong | 
Wind will not much hinder the o ight of Vifibleé:, as it ae do the hearing, of | 
Sounds. 
There is one difference save all others, between Vif bles and Audibles, | | 
not intermingle and confound one another , as hath been faid before, but | 
Soundsdo. Herice it cometh, thatthe folidity of Bodies doth notmuch 
hinder the fight, fo that the Bodies be clear, and the Pores in Right Live, | x 
as in Glafs, Cryftal, Diamonds, Water, &c. Buta chin Scarf ot Handket- | 
chief, though they beBodies nothing fofolid, hinder the fight : bay 
| (contrariwife) Psiped Porous Bodies donot much hinder the Heating, but 
folid Bodies do aleioft ftop ir, or at leaft attenuate if. “Hence allo it | 
‘cometh, that tothe Reflexion of Vifibles, fmallGlaffes (uffice, butto rhe 
Reverberationof Audibles,are required gte ater cee as hath likewife bee 
Vifibles are feen. farther off, than Sounds aré heard ; allowing feverdithe I 
lefs the rate of their bignefs : For otherwife, a greac ‘Soma will be heard | 
further off, than afmall Body feen. 
Vifibles require (generally) fome asteatice between the objet, and che | 
Eye to be better feen; whereasin Audibles, the nearer the approach of the} 
, Sound isto the Senfethe betrers -but inthis, thére may be a double error. | 
The one, becaufe ro Seeing there isrequited Light,andany thir gthacrouch- | 7 
eth the Pupil of the Eye (ll over) excludeth the Light. For i have heard 
his Eyes) that whilethe Silver-ncedle did: work upon the fight Of hisEye, to | 
remove the Film of the Cataraét, he never faw anything more cléar or per= 
fea, than that white Needle : Which (no doubt) was, pret 
was leffer than the Pupil of theEye, and fotook not the light from ir, The} 
‘other error may be, For that the obje& of Sight doth trike upon thet 
of the Eye, dire€tly without any interception ; whereas the Cave of the Ea at 
| doth hold off the Sound alittle fromthe Organ: And fo neverthelefs there 4 
| is fome diftance required in both. { 
Vifibles are (wifter carried to the Senfe, than Audibles; as appeared i 
| Thunder and Lightning ; Flame, and Report of a Piece ; Motion of the } 
Air, in hewing of Wood, All which have been fer down heretofore, b 
mae for this Title. | o 
re are ha RI EF IOI EES EIT, 
if oo Oe We ee a BS i Se ea ee 
