( ^^fa ) 
laid to endure the Suti and weather for whole ages without 
cracking or fpoilteg, and without much wearing in a very 
long time. ^ ^ * 
10. To try , whether fuch a kind of Plaiftcr may not be 
made by takiog powder of C/pj^a? fo prepard, as is the arti- 
ficial Marble abovcmet)tioned, and mixing with it a certaia 
proportion of Rofin, Colophon or Pitch, as alfo Brimftdne 
and crude Shells 5 all beaten to duftj adding thereto feme 
water, and heating all upon the fire, and then ufing it hot 5 
it being pethaps not amifs alfo,. to add fome wax and oyl of 
Terebinthin , as being very binding, and ingredients in fome 
Cements, 
I I. WhetherMorta,r orLimeftone will become much har- 
der and tbdre tenacious by ufing ftrong Wort in ftead of Wa- 
ter ? And what proportion of Malt will ferve to what quan- 
tky of Lime? 
1*2. As for Quarries , i. Whether a Bed of any kihd df 
Stone be ufually upon the matter equally thick all over, and 
che fupcrficiesabove and below do lye always in parallel and 
ftraight lines, or not confiderably nor frequently varying? 
2. Whether thefe Plains are fcldom or never, nor frequently, 
parallel to iheHorizoo.but for the moft part alwaics reclining^ 
fo as to make an angle with the perpendiculars* 3. Whether 
fomctimcs, when fuch Beds of Stone or other things do lye in 
Hills or high grounds near the (iipcrfice, they terminate and 
are cut off every where at the grafs fas they call it)or the day, 
or fome place above the valley about it i and yet , after fuch 
interruptioDj or being ioterfefted by rivers or brooks, and 
vcnarms of fheSea of conlidcrablc breadth,a Bed of thcfanic 
kind of Stobeoi: Mineral will be found lying in the fame plain 
with that fo interrupted or cut offin the ad jicent plain^or op- 
pofite high ground v^r on theothcr fide of fuch river or arm of 
the Sea > And whether inftances of this are ften in the GlifS ia 
Kent^ and Picaf^dy 3 and in Fife and Lothian, &c^ And whe- 
ther in the laft of them the Bcdsof Coal and other Minerals 
becutoff fo deep and wide, as to make way for the pafiiogof 
ihe i^ri/^ there betweembem 3 yet ihe Amf Bedds rup croft it 
^^?^f ig^^4^n>ipter ti^in^ (lie^^ of 
C^afe, wimthe iame thickuefe anci pofitioii^^j^ 
about 
