188 i:\PLOSIVE COMPOUND OP CHLORINE AND AZOTE. 



pi. V : it was previously filled with the solution from which 

 the compound was formed. 



CL 



The globule is represented at a j the bent part of the 

 tube was then placed in a vessel of water, and its open end 

 immersed into a wider tube, also rilled with some of the same 

 solution. The vessel containing the water was then heated. 

 When the temperature approached to lf30°, it began to distil ; 

 at 1 60° the distillation was rapid, the compound being con- 

 verted to vapour in the bent tube, which served as a retort, and 

 was condensed and collected in that which was disposed as a 

 receiver — much gas was given out during the process. The 

 double curvature of the retort tube was to prevent any of the 

 compound being floated over by bubbles of gas attaching them- 

 selves to it. This precaution we found was very necessary. 

 It did pot ex~ A globule of the compound covered with water, contained 

 plode at 200 j Q a jj tt j e S p 00n f tinned iron, was with the' spoon introduced 

 into a quantity of water heated to 200°— this temperature was 

 not sufficient to make it explode j it merely occasioned its vapo- 

 rization. 

 B 4 at it did \}o- The last experiment was repeated, varying only the tempera- 

 lently at 212. ture f the water, which, in this instance, was 212° j the com- 

 pound immediately exploded violently. 



These experiments prove, that the explosive compound does 

 not assume the solid form at — 1 6', that it may be distilled at 

 or below 160 , and does not explode but at a temperature above 

 .200°, suddenly applied. 



Our next object was to ascertain whether, when the natural 

 pressure of the atmosphere was taken off, or diminished, from 

 the explosive compound, it would still retain the fluid form, or 

 whether it would assume the elastic state — with this view we 

 made the following experiment : 

 Apparatus A tube, 31 inches long, closed at the bottom, had another 



or exposing tu k e Q f sm3 \\$t ^ore, t, ut f tne same lengthy and open at both 



ends, 



