]9(J REPORT ON A MEMOIR, 



And laftly, partes made with alcohol, olive-oil, and fur-* 

 bxigenated muriate of potafh. 

 repeated with \v e have repeated all thefe experiments which fucceeded 



perfectly, as well as the following, which appeared with reafon 

 to Cit. Robert, to deferve attention. 



He charged a piftol with common gunpowder, and having 

 primed it with the mixture of powder and muriate mentioned 

 above, he inflamed it with the fulphuric match *, and it went 

 . off. 

 further experi. Cit. Robert obferved, that the report, the colour of the 

 ^complete the ^ ame > a °d the odour exhaled by the various combuftibles are 

 enquiry. eflentially different; but he made no enquiries refpefting the 



gafes they formed, or the compounds which remained after 

 the inflammation. We propofed to collect the gazeous pro- 

 ducts in a hidro-pneumatic apparatus, for the purpofe of ex- 

 amining them, but the time appointed by the fociety for mak- 

 ing our report being but a few days, we have poftponed thefe 

 enquiries. 



Tho* curiofity alone may appear interefted in purfuing 

 fuch experiments, we have thought it a duty to try, in a fimi- 

 lar manner, feveral Ample and compound fubftances, the in- 

 flammation of which had not been before attempted. 



New Experiments made by the Commijfwners. 



New experi- The manner of operating being nearly the fame, to avoid 



meats. the continual repetition of the fame formula, we fhall only 



point out the fubftances united with the fur-oxigenaled muriate 



Phofphorus. of potafh. Phofphorus prefented beautiful deflagration. Hi- 



Hidrogengas. drogen gas took fire. To perform this experiment, we filled 



a bladder with inflammable air. To its flop-cock we affixed 



a fimple adjutage or copper tube with a fingle jet. We moif- 



tened this tube with fulphuric acid, and touched it with fur- 



oxigenated muriate of potafh, at the fame time preffing the 



bladder to make the current of the gas pafs over the fait. At 



the inflant of contact the gas took fire, as if by the eledric 



fpark. 



Ifculs. Gold, filver, zinc and iron, yielded no other phenomenon 



but the decrepitation of the fait alone. We were not furprifed 



* The tube and fulphuric acid, Tranflator. 



