64 Quadrature of the Circle.—Clock Work Machinery. 
whole, which might have been so ever since the water was let 
off ; for the air from the level would follow the vent of the stream, 
and since the opening to the cavern was effected, a slight circu- 
lation of air would probably be created. 
There were, I think, nine of us altogether ; we were in the 
cavern upwards of half an hour, and we felt no material difficulty 
in breathing, while our candles, one to each, burnt sufficiently 
clear ; which, with the animal breathing, must together have 
consumed a very considerable quantity of pure air, such as to 
have made a scarcity perceptible, if no fresh air had been sup- 
plied.— Newcastle Magazine. 
QUADRATURE OF THE CIRCLE. 
M. Scamarella, a Venetian geometrician, announces in the 
Gazette of Venice of 23d November, that he has solved the pro- 
blem of the quadrature of the circle, and that he is ready to de- 
monstrate it incontrovertibly to all the mathematicians in the 
world. According to M. Scamarella, the superficies of a circle is 
equal to the square of the proportional between the diameter of 
the circle and a line equal to three-fourths of the same diameter. 
It is also equal to the square of the circumference multiplied by 
half the radius, estimating their ratio as 7 to 21, and not as 7 to 
22,as Archimedes taught. M. Scamarella further engages to solve 
all the most difficult problems of this nature, in faccia a qualcun- 
que Matematico.—New Monthiy Magazine, No. 18. 
CLOCK WORK MACHINERY. 
(From the New York National Advocate.) 
There are now exhibiting at Mr. Vogel’s in Broadway, several 
wonderful pieces of clock work machinery, which, perhaps, 
equal the masterly ingenuity of the automata of Vaucauson, or 
of Albert the Great. 
The first is a small elegantly wrought gold cage, surmounting 
a musical clock work. In this cage is a fountain, and a bird not 
larger than a bee, which sings, flutters its wings, and flies from 
one part of the cage to another. The base of the second is also 
occupied bya musical clock work ; it represents a group of qua- 
drupeds around the basin of a fountain, where a goat drinks, and 
performs a variety of movements. In front is a basket with a 
pear in it: the moment the pear is touched, a dog on the other 
side gnashes his teeth, barks, and shakes himself till the pear is 
replaced, while a monkey behind threatens him with astick, and 
in the mean time munches an apple. A butterfly rests on a pil- 
lar above the fountain, and moves its wings and feet. The back 
ground to this group is a mass of rocks, from among which, now 
and then, afox makes its appearance. Above these rocks there 
is a small-patch of blue sky, and the sun turning on his axis, 
and 
