C 4H ] 
• than it comes in, both by the Chanels of Mt/^ and Velkx* 
Jcarlouzay as alfoby a concealed Subterraneous Paffage out 
the under Lake, wliich latter alone is able to tranfmit 
morq Water, than the laid eight Rivulets afford. Confe- 
queritly the Lake muft fink, and that in a certain propor- 
tion of Time, depending on the quantity of Water to be 
evacuated, compared v^ith the excefs of that that inns 
^ut abov^^ that that enters it, in the fame time : Thofc 
Pitts that are higher are fboneft drie, the lower lateft, and 
fo come to be emptied in the Order above defcribed. And 
when.the Lakeisall dry^ then the faid Rivulets foak by 
ieveral little holes in the Bottom, into the under Lake, and 
all their Water is carried away by the aforefaid Subterra- 
neous PalTage. .v\ >i ' 
That there is fuch a Paffage is very evident, and that 
it communicates under ground with the Chanels of Ma/a 
and Felka-Kjrlouza^ coming out with them, as has been 
already faid,near St.O;^//W at a Rocky Cave,and making 
the River Jefero. For when the Lake ofZjrknitz is very 
full, and runs out at both Velh and MaUrKjtrlouza, the 
River Jefero at St. Cantim overflows> and runs with great 
Violence. When it only runs out at MaU-Kjirlouza. 
( which is fomwhat lower than the other ) then the Wa- 
ter of Jefero is much lefs rapid. But when the Lake is fb 
fallen, that it runs out at neither of the two, the River 
is ftill left, butruns with a confiderable Stream, till 
two days after the Lake has been dry ; after which, the 
laid River becomes little, voiding no more Water than 
theLake receives from the eight Rivulets that run into 
It ) by which it is clearly proved, that this Subterraneous 
PalTage does meet with the Channels of Velka and 
MaU'Kjirlo^2:,ay and needs no farther 111 uftration. 
Hence in appears^ why this Lake fometimes is twice or 
thric^ drie in a. Year, at other times continues full for 
5.0t';4 Years together, but was never known to be drie 
for a iW"hole Years time ; for it falls drie at any time when 
there 
