680 PHILOSOPHICAL TRANSACTIONS. [aNNO 1712. 



same. It is to be obsen^ed, that when the globule, or drop, had arrived to 

 near 17 inches on the planes from their axis, it would become of an oval form; 

 and as it ascended higher, so would its figure become more and more oblong ; 

 and, unless the drop was small, on such an elevation of planes as was required 

 at such a progress of the drop, it would be ^j^^^^^ .^ 

 parted, some of it descending, and the rest of Inches from ei r 



it running up to the top at once : but on a ^^ ^^^^- ^ \ 



drop that separated there, I found the re- 



maining part of it, at 18 inches, would bear 



an angle of elevation equal to 11 degrees to 



balance its weight. Higher than that I could 



10 1 00 



not observe. The planes were separated at 



their axis about -^ of an inch. I found but * * 



little difference between small and larger * * * 



drops of the oil, in regard to the experiment. 



The angles were measured by a quadrant 



• 17 10 OO 



marked on paper, of near 20 inches radius, ' 



18 11 OO 



divided into degrees and quarters. 



An Account of the Eruption of a Burning Spring, at Broseley in Shropshire. 

 By Mr. Rd. Hopton. W 334, p. 475. 



The famous boiling well at Broseley, near Wenlock, in the county of Salop, 

 was discovered about June, 17 1 1. It was first announced by a terrible noise in 

 the night, about two nights after a remarkable day of thunder: the noise 

 awaked several people in their beds, that lived hard by; who coming to a boggy 

 place under a little hill, about 200 yards from the river Severn, perceived a 

 surprising rumbling and shaking in the earth, and a little boiling up of water 

 through the grass. They took a spade, and digging up some part of the earth, 

 immediately the water flew up a great height, and a candle that was in their 

 hand set it on fire. To prevent the spring being destroyed, an iron cistern is 

 placed about it, with a cover to be locked, and a hole in the middle, through 

 which the water may be viewed. If a lighted candle, or any thing of fire be 

 put to this hole, the water immediately takes fire, and burns like spirit of wine, 

 or brandy, and continues so long as the air is kept from it ; but by taking up 

 the cover of the cistern, it quickly goes out. The heat of this fire much ex- 

 ceeds the heat of any fire I ever saw, and seems to have more than ordinary 

 fierceness in it. 



