Analyjis of the AW. 209 



Experiment LXXXVIII. 



I filled the ftrong Hungary -water Bottle b c 

 (Fig. 36.) near half full of Peas, and then full 

 of water, pouring in, firft, half an inch depth 

 of Mercury \ then I fcrewed at b into the 

 bottle the long (lender tube a z, which reached 

 down to the bottom of the bottle ; the water 

 was in two or three days all imbibed by the 

 Peas, and they thereby much dilated ; the 

 Mercury was alfo forced up the flender glafs 

 tube near eighty inches high ; in which ftate 

 the new generated air in the bottle was com- 

 prelTed with a force equal to more than two 

 atmofpheres and an half 5 if the bottle and 

 tube were fwung to and fro, the Mercury 

 would make long vibrations in the tube be- 

 tween z and b y which proves the great elafti- 

 city of the compreffed air in the bottle. 



EXPERIMENT LXXXIX. 



I found the like elaftick force by the fol- 

 lowing Experiment, viz. I provided a ftrong 

 iron potabcd, (Fig. 37.) which was two and 

 ^ inches diameter within fide, and five inches 

 deep, I poured in:o it half an inch depth of 



P Mercury •, 



