HT, Wurtz on a Gas Well in New York, 337. 
here an important residual projectile force, in addition to 
This flow has now gone on for more than four years, and accord- 
ing to the testimony of residents of the vicinity, without any per- 
ceptible diminution of energy; indicating, in the aggregate, an 
escape of some 600,000,000 of feet, about half the yearly make 
of our largest gas manufacturing company, the Manhattan. The 
Most remarkable feature is the absence of diminution of flow for 
80 long a time,in connection with the low pressure indicated. I 
hence infer the probability of an indefinite continuance; as the 
as nust originate not from a reservoir in a state of compression, 
but from huge masses or surfaces of rock, from which it oozes out 
near the ground, filled with quicksilver, and the ther- 
inserted. It was found, however, that the temperature 
—Szconp Serres, Vou. XLIX, No. 147.—Mar, 1870. 
