1^4* SCIENTIFIC NEWS. 



clolh dipt Info water; and feciire the jun6tures of the veflels 

 by furrounding them with flips of paper only. Having done 

 this pour through (hetubulure of the relorl 3oz. of concentrated 

 nitrous acid ; a violent adion takes place, the fugar becomes 

 difTolved, and the alcohol converted into ether^ pafles over 

 in(o fhe receiver; its quantity is nearly equal to the alcohol 

 employed. 



Accaifioii of Sulphuretted Hidrogen Gas^ hy the AJFufion of 

 Nitrous Acid. By Profejfor Lichtenberg *. 



Afcenfionof ATTEMPTING to illuHrate the decompofition of ful- 



irren"at*'^' P^'^retted hydrogen gas, I filled a bottle with it, capable of 

 holding about 18oz. of water. Having done this, I poured 

 into it at once, ^ of an ounce of nitrous acid ; a hifling noife 

 took place, and much red vapour was di(engaged» which in 

 order not to molefl: my auditors, I confined in the bottle, by 

 corking it. No fooner had this been accompliflied, the mix- 

 ture exploded with a loud report, accompanied with a blue 

 flame +. The pieces of gl'afs were thrown to a ronfiderable 

 diflance, the larger ones were covered with fulphur. 



■ • Ibid. 



f For the fuccefs of this experiment, it feems to me to be necef- 

 fary that the gas mull be obtained by decompofmg water by means 

 of fulphuret of iron ard an acid; for it always failed in my hands,, 

 if an earthy or alk<iline fulphuret had been made ule of for the pro- 

 tlnflion of it. F. A. 



