58 



Prof. Daniell on a New Qxy-hydrogen Jet. 



in the centre of another jet ef 9 (only seen in the section,) and 

 connected by means of the lateral arm and screw d, with an- 

 other gas-holder of hydrogen gas ; or with, what is better still, 

 the pipe of a coal-gas burner. The second jet thus forms an 



exterior coating to the first; and when the inflammable gas 

 flows through it, and is ignited at the orifice, a stream of oxy- 

 gen may be directed into the interior of the flame by means 

 of the latter with any required degree of force. 



All the effects of the oxy-hydrogen blowpipe may thus be 



