Miseellaneous Intelligence. 443 
by its dark color, and at the same place a thick volume of steam rose 
fiom the outside of the original crater, as if a new one were’ forming. 
an the appearance of this mass of ashes in the middle of the sea. 
You may form some idea of the force of the fire that must have been 
required to form it, by considering that it is, as near as could be estimated, 
St. Maur in order to make the Marne contribute its water to the capital, 
deriving water from the Dhuys are actively progressing. The vast cis- 
We which are to receive it are in course of con 
,of Ménilmontant, at the place called Pare St. Fargeau ; and the prelimi- 
id the cireuit of 
hes between Joinville-Le-Pont 
and Charenton, Napoleon I. caused a canal, two kilometres in length, half 
Here stand the mills of 
Maur, which are to be replaced by a hydraulic machine, throwing 
about 40,000 cubie metres of water in the course of 24 hours. These 
re set in motion by falls of water three metres in height by eight. 
the canal, distributed between 
nk of the river. The eastern one is pro- 
artificial rivulets of the Park of 
motion by a strong turbine, 
urs, for the sum of 
ipality of 
‘iA spar Oa ay F the principal prizes proposed 
hid y of Sciences.—The following are the pr : : 
this year and.the following ones, by the Academy, at ite last, public 
