( 3°4 ) 
ginal Line ought to be in, and the Shadow of that Thread 
caft by a Candle, fo as to pafs through the given Point on 
the Pi&ure will be the Reprefentation fought* The rea- 
fon of this Conftru&ion is, becaufe the Rays’ of Light 
that pafs from the Candle to the Thread fo flretch’d, make 
the Plane which generates the Reprefentation fought. (Tee 
Prop i.) And there may be other Expedients of the like 
nature gather'd from the fame Principle. 
m.VUCJTUS LE0V1ENS IS, 
orl ' rrr J Or, 
The, Topography of the ancient Town and Tarifh 
of LEEDS and Tarts adjacent , in the County of 
*£rY -0 R K', 49£fc. OJ !By Ralph Thoresby, Effo 
Fellow of the Royal-Society, London . Fol. iy\ y. : 
T H O’ the diligent and curious Author of this Work 
do not profefiedly treat of any Place but the ancient 
• Town and Parifh of Leedes, and the Regio Leodis, or ad- 
joyning Territory called Elmet ; yet not only the Preface 
is more general, relating to the County, but there arc 
many Paflages in the Book it felf, wherein he takes occa- 
fion to infert the Pedigrees of fuch of the Nobility and 
Gentry, as have had any Eftates within the preferibed 
Limits, tho’ the chief Seat of the Family be diftant; as 
efteeming all Provinciates,' who have but Domic ilium in 
Provincia: to fome of thefe he hath premifed feveral Defc 
cents from ancient Deeds yet remaining in the relpe&ive 
Families ; and to mod of thofe that are inferted in the 
Vifitations in the College at Arms, London, he hath ad- 
ded the Dates from Original Deeds, Regifters, drc. and 
continued them to the prefent time, which hath rendrea 
S-T - ' 91 it 
