35 8 
Natural Philofopby. 
Part IV. 
(a) See bis 
Lampus, 
p. 14. 
(b) Ibid. 
Tab.3,Fig4 
notice. That it hath fix or feven Motions ; 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 5 a Rain-Meafure , fuch an one as 
is next defcrib’d ; a Weather-Cocky to which fubferves a 
piece of Wheel-Work analogous to away Wifer i and a 
Hygrofcope. 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 Howler which the Clock alfc 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 chrijlopher Wren. In order to the Theory of 
Vapours, Rivers, Seas, &c. A triangular Tin-Velfel hang¬ 
ing in a Frame, as a Bell, with one Angle lowermoft. 
From whence one fide rifes up perpendicular, the other 
fioaped ; whereby the water, as it fills, fpreads only on one 
fide from the centre, till at length it fills and empties it 
Pelf- 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 5 made with fe- 
veral Valves and Springs to open and fhut it for that pur- 
pofe. Contriv’d by Mr. Hook 
A LAMP-FURNACE. By the fame Perfon. Towards 
the bottom is a partition with a hole in the middle 5 below 
which, Hands a Veflel of Oil with a Wick, and a Cork to 
float it, fo as to ftand within the Paid hole. Over this is 
placed a Pan, vig. with the bottom about two inches di- 
llant from the partition. Within which, is fine Sand. 
Defignd for the hatching of Eggs, in order to obferve 
the Procefs of Generation. As alfo for digefting of Li¬ 
quors. 
A pair of Semicylindrick LAMPS. Contrived, defcrib’d, 
( a ) and delineated (b) by the fame Perfon. Defign’d, 
for the poyfing the Liquor which is to feed the Flame, 
fo as to keep the furface thereof always at the fame height, 
till it be all confum’d. And thereby not only to fecure, 
that it never defert the Flame, and fo to fave Attendance: 
but 
