( *79 ) 
cular Height is fifty or fixty Feet, difcovered by Sub- 
terraneous Rivers, which, by degrees, have waffl’d a- 
vvay the Earth and loofe Stones, and difcovered thefe 
mighty Rocks, There are many great Pits fallen in 
on the fides of the great Mountain $ feveral of them 
in a fmall Compafs of Ground, fo that it is dangerous 
travelling near them. There are many Caves form’d, 
fome very large, the Sides and Arches of Marble 5 fome 
of a Liver-colour, varied with white in many little Fi- 
gures ; fome of a light Blue varied with White ^ but 5 
could find no entire White or Black among them. 
XXXVII. Remarks upon the Plague at Copenhagen 
in the Tear 1718. Communicated by John 
Chamberlayne, Efq 5 F. R. S. 
^ j HIS Difeafe began to fhow itfelf firft in this 
I City, about the beginning of July, 1711. It in— 
creafed ’till the beginning of September ; after which it 
diminilhed by little and little to the End of the Year, 
at which time it totally ceafed. 
It appears, that before this Diftemper there were about 
Sixty Thoufand Souls in Copenhagen : From whence they 
infer, that there is Born every Year about Two Thou- 
fand, and that there Dies nearly the fame Number 3 
which being Multiplied by Thirty makes Sixty Thou- 
fand. 
In the Six Months which this Diftemper continued;, 
it is thought it carried off about 25000 Souls. It is true, 
the Publick Lifts reckon but 22535 - r but it is agreed by 
all, that in the laft Week of Augujl, and the two firft 
Weeks of September^ each of which carried off above 
2300 .■ ■ 
