(4H) 
2V Whether different Load-ftones will give different Dlredii- 
ons-f And whether fainter or ftronger touches upon one and the 
fame Magnet ^ will caufe any Variation in the Dlre^l-ions^ For 
which purpofe^ as many Loaa-ftones fliould be procured, as could 
be had, and good number of Needles exactly raade^ of the fame 
Metal^ .bignefs-, md figure f 
P R O P O S A L S 
7'Jtrphe Effe^isofthe Pneumatick Engine exhaufledf m 
Plants^ Seeds ^ Eggs of Sdkworms, 
The Ingenious Dr. Beale did formerly fuggiep-^ a^ follows. 
It would be^I think (faith he)vevy well wor th the try al ^co fee whdt 
Effeds would be produced on Planrsj put into the Pneumatick(or 
RvUifying ) Engine of Mr. Boyle ^ with the Earth , about their 
RootS;,and flourilhing-, whether they would not fuddenlywither, 
if the Air were totally taken from them, And •particularly to try 
in the Seafon, Cherrj-bkjfoms^ when partly opened;, partly not o- 
pened, upon a Branch ^ to wit, whether the Air rnay, fo atte- 
nuated as to blaft. Eut it may be noted;> that the BlofibiiTs donot 
forthwith difcover the blaft; An old experienced Country-man 
having once given me notice of a blafty Noon, (it being then a 
Sultry weather, and fomewhat gloomy with the thixrknefs of Ex- 
halations , almoft like a very thick Mift) and within a day or two 
fliewing theproof upon the Cherry- Bloflbrns then flagging," but 
not much altering their Colour till two dayes more were paft. 
The no hie Mr, Boyle Jugge[ls a^s proper for the approach mg Sea" 
fof?^y That'itmay betryed^ 
1 . W het her Seeds (efpecially fuch as ar^'qf a hafty grbwthi"z//V, 
Or/>/>3 Lettice^ Garden-cre^ feeds^ &c,) will germinate and thrive 
in the exhaufted Receiver of thefaid engm^ 
2. Whether the Exclufion of Air fiom the Senfttive Vhm^ 
would be harmful to it c' 
3. Whether the Grafting of Pears upon^y//;;/^ Cr^*r^/>4 (the 
almon: onjy Purgative Vegetable known in England) will pro- 
c}'.Kt the effedl of communicating to the Fruit that purging qua- j 
jity,or note j 
4. Whether Silkworm Eggs will be hatched in fuch an exhait- j 
fted Receiver, in the Seafon proper for hatching ^ j 
To j 
