(lOlO) 
%ni wiped very dean with cloaths 5 if then it weigh more than 
before , 'tis of that kind ^ which irabibes water , and therefore 
not {o fit to endure any confiderable time without rotting the 
iathsand timber, 
4. Thefe Stones may be pretty well guefled at , whether 
they be of a clofe or loofe textiure , by their C$l0ur : For the 
9vedUckifh Bletv is apteft.to take in water $ but the iighttr blew 
is alwayes the firmeft and clofeft. To which may be added 
th^Tonch 5 for , a good ftoae feels fomewhat hard and rough > 
i^hereas an open ftone feels very fmooth, and as twerc^oily. 
5 . Place your Stone longways perpendicular in the midft of 
a Veffel of water ( no matter^ how (hallow the water be , fo ic 
exceed halfe a foot depch5)and be fure^the upper un-immerfed 
part of the Stone be not accidentaly wetted by the hand, 01 
otherwife^ and fo let it remains a day, or halfe a day, or lefs. 
If it be a good firn^e ftone , it will not draw ( as they fpeak ) wa- 
ter above half an inch above the level of the water, and that 
perhaps but at the edges only , the parts of which might be 
fomewhat loofen'd in the hewing. But a bad ftone will draw 
water up to the very top,be the ftone as long as it will, all over. 
As for the Charges of Covering Houfes with Slate, they 
may be thus computed. 
^ fti. d. 
IQOO. of Bfford fmdtt blew at the (hips fide in Pli- J ^ ^ 
mouth harbor ~ — — — . c ^ 
XOO0. of Efferd Urge hlew ^ — > — p — p. 
1000. ofC/i»pcImtl — - — " • 
looOo offmaS hlew of other Quarries — ■ 4 — = - 0. 
looo' of large bletp — — — * 8- ' o. 
300Q. of fmall blew , accompted i.Tuns in? 
carriage by water- - — ^ S 
1000. of large blew , i. Tun • — 
300©, of fmall will cover i. F^(^le of work at7 
the fifth piti plaine. J 
Every Pcole of work is either 6 Soot broad and 14. 
foot up^n both fides,or 168 foot in length, 
and one m breadth. — * 
3000 of large will cover Pooles of plain I 
work ---«-^ — ^ — «-.«-^«-^ > 
Hewiflg 
