( 2^8 ) 



On the morning of the third day after the glafs had been opened, 

 I examined it, and faw that b\it a linall part was remaining, yet the 

 globules were expelled with the' fame force ; in the evening, about 

 nine o'clock, it was diminiflicd to lefs than the fize of a large grain 

 of fand, and yet globules were expelled from it, though in no great 

 number, by reafon of its minutenefs. 



On the fourth day there remained no more than the fize of a fmall 

 grain of fand, yet the expulfion of globules ftill continued: in the 

 evening there was nothing remaining of it defcrving to be men- 

 tioned, nor did I fee any more globules illuc from it. 



During the courfe of thefe my obfervations I have often conli- 

 dered what might be the caufe why flame is fo eafdy produced from 

 this fubftance, but have not been able to fatisfy mjiclf on that 

 head. This, however, feems certain to me, that this fubrtance may, 

 in great part, be kejjt out of water undiminiflied, provided it be pre- 

 ferved from communication with the air, and clofed up in fome vef- 

 fel, as I have mentioned. 



If any pcrfon lliould imagine, on reading my defcription of the 

 glafles fabricated by me for thefe and my other obferv^ations, that I 

 am verfed in the art of glafs-blowing ; I mull inform him, that the 

 only knowledge 1 have therein was acquired from thole artills who, 

 at our fair-times, came to exhibit the manner of blowing in glafs 

 by the candle or lamp ; and, by obferving their manner of working, 

 I have learned fulBcient to qualify myfelf for preparing glalles to 

 anfwer my feveral purpofes. 





