a ad body, having one end firmly fixed in the Earth, at 
fomeage or other, as well work wrack and make {plin- 
tering and ftretched pores, paflages, cavities and fucb 
like in a live and growing Tree, at fome time of conti- 
nuance of its force with its oft repeated beating, twitt- 
ing, andpreHingblafts j as well as the beft chofen Maft 
of a Ship may fuffer dammage by the fame caufe, even to 
total fraction. By (ome this is fuppofed to proceed from 
EarthquaJ{esy but whether or not, is yet to be examined. 
But the opinion of fome feems not to be extravagant 
who think it to be an original diftemper in the Tree, and 
to proceed from the foil^ot rather an innate difeafe from 
fome tho undifcernable imperfection in the /f^^ it felf, 
and yet not fomuch but that they live many years, and 
grow to great bulk and ftarure, but are obfervt d to bear 
lejjer leaves and f mailer Acornes, but whether theyo/7 be 
concern d may be urged } the Trees about Oxford Weft- 
ward, being generally affected with this diieafe , and 
thole from the Eaftlide prove excellent found Timber, 
and the loiles feeming to refemble one another. 
But by what means foever this may come, it is certain 
that fome Tr^^j* are much more found then other, and 
that fome prove full of inbred difeafes and cavities, be- 
fore they are cut down, which cavities and Jiretcht vef- 
fels being fiUd with too great a quantity of aqueous 
and undigefted fap, as it were Hydropical ( for it is 
thought that the genuine and natural fap of thefe our 
native Trees though undergoing condenfation will re- 
main fecure and fafe, as may be fuppofed from thofe 
that are well and firmly ftandingj are thereby rendred 
capable of not only condenfation but glaciapon alio 
by the continuance and (everity of the Aires frigefaftive 
power,- which being fufficiently known to employ more 
room being Ice than when formerly liquid, might pro- 
bably caufe thtiQ breaches^ and if we confider the ex- 
panfive motion and fpring of the ^/V<? included In the 
Z 2 cavities 
