358 Natural Pbilofophy. Part IV' 
notice, That it hath fix or feven Motions 3 -which he fup- 
pofeth to be here advantagioufly made altogether. Firft a 
Pendulum Clock, which goes with * of a 100 lib. weight, 
and moves the greateft part of the work. With this, a 
Barometre, a Thermometre 3 a Rain-Meafure, fuch an one as 
is next defcrib'd; a Weather-Cock, to which fubferves a 
piece of Wheel- Work analogous to a way Wifer 3 and a 
Hygrofcofe. Each of which have their Regefter, and the 
Weather-Cock, hath Two 5 one for the Points? the other for 
the Strength of the Wind. All working upon a Paper fall- 
ing off of a Rowler which the Clock alfo turns. 
An Inftrument for MEASURING the quantity of 
RAINS that fall in any fpace of time, on any piece of 
Ground, as fuppofe upon one Acre in one year. Con- 
trived by Sir Chriftopher Wren. In order to the Theory of 
Vapours, Rivers, Seas, dec. A triangular Tin-VeiTel hang- 
ing in a Frame, as a Bell, with one Angle lowermoft 
From whence one fide rifes up perpendicular, the other 
floaped 3 whereby the water, as it fills, fpreads only on one 
fide from the centre, till at length it fills and empties it 
felf. Which being done, a leaden poife, on the other fide, 
immediately pulls it back to fill again. 
The Model of an Iron Inftrument to fetch Earth, or 
other Bodies, from the bottom of the Sea 3 made with fe- 
veral Valves and Springs to open and Ihut it for that pur- 
pofe. Contrived by Mr. Hook 
A LAMP-FURNACE. By the fame Perfon. Towards 
the bottom is a partition with a hole in the middle 3 below 
which, (lands a Veffel of Oil with a Wick, and a Cork to 
float it, fo as to ftand within the faid hole. Over this is 
placed a Pan, vi%. with the bottom about two inches di- 
ftant from the partition. Within which, is fine Sand. 
Defign d for the hatching of Eggs, in order to obferve 
the Procefs of Generation. As alfo for digefhng of Li- 
quors. 
A pair of Semicylindrick LAMPS. Contrived, defcrib'd, 
Lai^us^ anc * delineated W °y tne f anlc Perfon. Defign d, 
^ampus, ^ e p 0 yfi n g tne Liquor which is to feed the Flame, 
Tab lb Fi ^° as to k ec P t ' ie f ur f ace thereof always at the fame height, 
a .3- >g-4. t jjj j t j 3e a fj cpnfum'd: And thereby not only to fecure, 
that it never defert the Flame, and fo to fave Attendance : 
but 
