58 Natural Philofopb). Part IV» 
notice, That it hath fix or feven Motions 5 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^zThermometre 3 a Rain-Meafure, fuch an one as 
is next defcrib'd; a Weather-Cock, to which fubfervcs a 
piece of Wheel-Work analogous to a way Wifer 5 and a 
Hygrofcofe. Each of which have their Regefter, and the 
Weather-Cock^ hath Two 3 one for the Point s, the other for 
the Strength of the Wind. All working upon a Paper fall- 
ing orT of a Rowler which the Clock, alfo turns. 
An Inurnment 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 Christopher Wren. In order to the Theory of 
Vapours, Rivers, Seas, dec. A triangular Tin-VerTel 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 Internment to fetch Earth, or 
other Bodies, from the bottom of the Sea 3 made, with fe- 
veral Valves and Springs to open and fhut it for that pur- 
pofe. Contpv'd 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, ftands a Vefiel 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, 
(a) Sethis ( a ) anc j delineated (b) by the fame Hbrfon. Defign d, 
^ampus, ^ poyfing the Liquor which is to feed the Flame, 
Tat> lb Fi ^° as to k" ee P f ur f ace thereof always at the fame height, 
a .3 >g-4- t jj[ - t k e a |j con f um j j ^nd thereby not only to fecure, 
that it never defert the Flame, and fo to fave Attendance : 
but 
