438 Miscellaneous Intelligence. 
IV. MISCELLANEOUS SCIENTIFIC INTELLIGENCE. 
From our Paris Correspondent. 
1. The Artesian Well at Passy—The complete success of the Arte- 
sian well at Passy has given lively satisfaction to all, and especially to 
those who appreciate the scientific interest which attaches to it. The 
question of water is of itself interesting enough to the Parisian peopl 
who have been reduced hitherto to the Seine as the principal souree 
of potable water. The Prefect of the Seine had conceived a project 
for an aqueduct to be fed by the numerous springs in the neighborh 
of Chalons sur Marne. It seems quite remarkable that this project was 
little to the public taste and that numerous voices were raised in favor 
of the river Seine! The Parisians are convinced that this river water 
The city of Paris while awaiting the adoption of more thorough 
measures for attaining her water supply, has achieved an experiment 
increased diameter. Assuming that the water in the Passy well should 
rise with an abundance equal to that in the well of Grenelle, it ought to 
farnish near 40,000 cubic meters in 24 hours. (The cubic meter 
==220°17 page Mr. Kind, the German engineer, the inventor of the 
method used in boring this well, and charged with the execution of 
work, contracted to guarantee only 13,300 cubic meters, and on this es-, 
timate the plan was adopted. The boring commenced in Septembet: 
1854, and was finished on the 24th of September, 1861. The flow an 
remarkably exceeded the estimates—commencing slowly at first, Snail 
27th of last September it had reached 25,000 cubic meters and ra 
rested at 20,000 c.m. This yield, it is to be remembered, wes hen 
constant only at the well’s mouth, and diminished very considerably Ww 
e tubes were added which carried it up to 25 meters above the groun 
The well of Grenelle which yielded 2000 litres per minute at the surface, 
gave only 630 litres, less than one third, at the summit of a tube rising 
33 metres above the level of the surface. well 
The second question is, what will be the influence of the mee 
a. the old, distant from it about 3000 metres (less than two takat 
latter soon commenced to show a diminished flow, and by the fall- 
etober the diminution had reached a fourth of the ordinary y™ ie 
‘from 630 to 460 litres per minute, a loss of about 40,000 gallons 
