PTrTIH. Of Regular Stones. 5 0 1 
being given ahd repeated for above five days together. 
See one or two Very reniarquable Hiftories hereof in Boe- 
tim. (a) , (a) Do. Lap. 
The Larger Hollow STALACTITES, or WATER- ^ Gem - Lib * 
PIPE. The Greeks Name fuppofeth it to grow fomewhat 
after the manner of Icicles, from LapidifickWaters. Yet 
how it fhould grow hollow, as this, is fomewhat hard to 
conceive. For hereby, it feems rather to grow or fprout 
upward , as the Stelechites. Only with this difference, 
That as that grows from an open Bed : this probably, from 
one under Water. Whence I take leave for the Englifh 
Name. 'Tis three inches long, in thicknefs equal to the 
little Finger. Of a Cylindricl^ Figure, faving that at both 
ends 'tis a little more flender 3 whether naturally, appears 
not. Compofed of feveral a(h-colour d and blackilh 
Crufts , exceeding thin crifpe and brittle , not ill re- 
fembling a rouled Wafer. The Bore is lined through with 
a fmall granulated Candy. 'Tis inftantly diffdlved with 
Sprit of Nitre. 
ANOTHER, confiding wholly of white Crufts or Wafers 
one within another. 
The SMALL WATER-PIPE. 'Tis a Clufter of very 
fmall Tubes, with the Bore fo fmall, as fcarcely to be feen 
without a Glafs. Rough all over with a tuberous Cruft. 
They are found in Germany, Moravia, and other Parts, 
One Drachm hereof in Powder , is a potent Sudori- 
fic i. (b) Boet - de 
A Stone like a Pebble with fmall TUBULAR KNOBS Lap ' & °' 
upon it, like the Primordia of a Water-Pipe. They are 
fo fmall, that their hollows cannot be obferv'd without a 
Glafs. The Stone on which they grow, though very hard, 
yet makes a ftrong Efervefcence with Spirit of Nitre. Thus 
far of Cylindrick^ Stones. 
The CONICK STALACTITES, folid. 'Tis about three 
inches long 3 the top fharp, the middle ? an inch over 5 
the bafe, an inch, with four or five excentrick Crufts. The 
whole compofed of feveral Crufts, one within another, as 
the Water -Pipe. Yet not hollow, as that, or rather not 
empty, but filled with a Red ftony fubftance. Being 
kroken, it {hines like the Lapis Judaicus. Without, fmooth, 
of an Afri-colour, with fome little cafl of red. Inftantly 
diffolved 
