i+S Note of some Experiments 



into water. If lime-water be formed, it will become turbid by 

 blowing through it by means of a quill : in this case, too, the 

 calculus will be that of oxalate of lime. It may be merely 

 added, if that under examination be the triple calculus, it will 

 yield volatile ammonia, on treatment with caustic potassa. I 

 need not particularize ; and these are the general indices. 

 I always am, with the highest respect, gentlemen, 



Your very faithful and obedient servant, 



- J. Murray. 



P.S. — I notice a slight error in my paper on " Solution de- 

 veloped from the Action of Sulphuric Acid on Chlorate of Po- 

 tassa in Water." It dissolves gold leaf very readily ; the foil 

 appearing finally a very thin perforated film having lost all its 

 metalline appearance. Blue colours are promptly discharged. 

 Sodium does not kindle when projected on its surface, though 

 potassium inflames very readily. J. M. 



XCI. Note of some Experiments on the Vaponr of Sidphiiric 

 Ether. By John Murray, F.L.S. M. IV.S. Sir. 8^-c. 



To the Editors of the Philosophical Magazine and Journal. 



Gentlemen, — 1 am not aware that the following phsenomena 

 are any where recorded ; many of the experiments detailed are, 

 perhaps, sufficiently curious and interesting to merit a place in 

 your Journal. 



The copious and continued extrication of inflammable va- 

 pour from the surface of ether is remarkable, and may be made 

 subservient to a chain of experiments illustrative of its physi- 

 cal and chemical character. 



The vapour may be poured in an invisible form from one 

 vessel to another, as in the case of carbonic acid gas. An ig- 

 nited taper will be the test of its presence. In like manner 

 the vapour may be laved or pumpeii out into other vessels, or 

 transferred by a wide stop-cock laterally, or through a funnel. 



The vapour, however, being 'ponred into a glass funnel with 

 a stem eight inches long and the diameter of the bore l-8th 

 to l-16th inch diameter, did not flow out, but remained in tlie 

 fimnel above. 



The sulphuric ether vapour poured on carbonic acid gas, 

 mingles with it, and from this uniform diffusion, the gas, &c. 

 burn with a diluted blue flame to the bottom of the cylinder 

 containing them. 



Mixed with hydrogen, it burns with a lambent blue flame. 



With nitrous gas, ignition does not i)roduce explosion. It 



burns 



