onely very delightful, but tofuch as know not the contrivance, 
very wonderful ; fo that Spe&ators, not well verfed in oftieks y 
that ftiould fee the various Apparitions and Difappearances the 
Motions, Changes, and A&ions, that may this way be reprefen- 
tecl, would readily believe them to be fuper-natural and miracu- 
lous, and would as eafily be affedled with all thofe paiTions of 
Love, Fear, Reverence, Honour, and Aftonifhment, that are the 
natural xonfequencesof fuch belief. And had the Heathen Priefts 
of old been acquainted with it, their Oracles and Temples would 
have been much more famous for the Miracles of their Imagina- 
ry Deities. For by fuch an Art as this, what could they not have 
reprefented in their Temples ? Apparitions of Angds^or Devils, 
Infcriptions and Oracles on Walls 5 the Profpedt of Countryes, 
Cities, Houfes, Navks, Armies the Aftions and Motions of 
Men, Beafts, Birds, &c. the vanifhing of them in a cloud, and 
their appearing no more after the cloud is vaniflu : And indeed 
almoftany thing, that may befeen, may by this contrivance be 
very vividly and diftineily reprefented, in fuch a manner, that, 
unlefs to very curious and fagacious perfons^ the means howfuch 
Apparitions are made, (hall not be difcoverable. The way in 
fhort is this 5 
Oppofite to the place or wall, where the Apparition is to be, " 
lex aHolebemadeof about a foot in diameter, or bigger-, if there 
be a high Window, that hath a Cafement in it, 'twill be fo much 
the better. Without this hole, or Cafement open'd at a con- 
venient diftance, (that it may not be perceived by the Compa- 
ny in the room) place the Pi&ureor Objeft, which you will 
rcprefent, inverted, and by means of Looking- glaffes placed be- 
hind, if thepidurebe tranfyarent, refled the rayes of the Sun 
fo, as that they may pafs through it towards the place, where it 
is to be reprefented $ and to the end thatno jrayes may pafs be- 
fides it, let the Pidlure be encompafs'd on every fide with a 
board or cloath. If the Objeft be a Statu*, or fome living Crea- 
ture, then itmuft be very much enlightn'd by cafting the Sun- 
beams on it by Refracflion^ Reflexion, or both. Between this Ob- 
ject, and the Place where 'tis to be reprefented, there is to be 
placed abroad Convex-glafs, ground of fuch a convexity, as> 
that it may reprefenc the Obied diftind on the faid place $ which 
any 
