E 454 ] 
the Food of the Fifli ; the Situation of the Parts in 
which it is generated, and many other Circumftances, 
may contribute to this Uniformity of Appearance. 
A little of this Stone fcraped, and laid upon an 
hot I^on, gave a faint urinous Smell* and calcined 
into a light, ^greyifh, infipid Earth. 
Had it been a real animal Subftance, or a confti- 
tuent Part of the Animal, its Smell would, in all 
Probability, have at once difcovef d it. 
The Natives about the Volga very much efteem 
this Stone for its Virtues, being in great Reputation 
to promote Delivery. The common People take 
from io Grains to 30, 40, or even 60 fcraped fine 
in a little Water, 2, 3, or 4 times in 24 Hours, 
when the Cafe is dangerous. 
It is alfo highly commended as a Diuretic and 
Lithontriptic 5 and this not only amongft the com- 
mon People, but amongft fuch as are more capable 
of informing themfelves of its Effects. 
References to the Figures in Tab. If. 
Fig. 2. an oval Stone, flat and rugged on its under Side; Part of which a , b. 
has been fcraped away, and is broken into two Pieces by the Crack c, d 
at e and f appear 2 Nuclei or Centers of fmaller Incrustations near the 
Surface of the larger Stone. 
Fig. 3. Is the larger Fragment of the fame Stone, or the Side b , c , d. at 
g is a Cavity anfwering to the Protuberance h , in the next Figure. i> i, 
are the 'Alining Rays diverging from the central Nucleus. 
Fig. 4. The fmaller Fragment, or the Side a, c, d. in which the fmaller 
Nuclei e and/, of fig . 2. appear, h is the central Nucleus , which fills 
up the Cavity g in fig, 3. and i, i, i, are the like Sprays or Spicula as in 
fig- 3 - 
Fig. 5. A fmooth oval Stone, in Form of a long Egg. 
Fig. 6 and 7. This Stone fplit in two Pieces, afi and c t d. e in fig. 6 is the 
Nucleus or Center of the Stone, which feems to have been a Tooth of 
a Fifli, and filled up the Cavity / in fig. 7. and i, z, are the 
Sprays or Spicula in both Figures, 
