9 8 P r e get able Stanch. 



tion of the allies, to fupply fome of the air 

 bubbles which were drawn out at u 



But when I feparated the tube c o from 

 the gage r z, and let the end i in water, 

 then the moifture ( being not reftrained as 

 before) rofe fafter and higher in the allies 

 c o, and depreffed the mercury at a, fo as 

 to be 3 inches lower than in the leg b, by 

 driving the air upwards, which was inter- 

 mixed with the alhes. 



I filled another tube 8 feet long, and f 

 inch diameter with red lead; and affixed it 

 in the place of c o to the gages a b> r z. 

 The mercury rofe gradually 8 inches to z. 



In both thefe Experiments, the end i was 

 covered with innumerable air bubbles, many 

 of which continually pafled off, and were 

 fucceeded by others, as at the tranfverfe cuts 

 in the Experiments of this chapter. And as 

 there, io in thefe, the quantity of air bub- 

 bles decreafed every day, fo as at laft to have 

 very few : The part i immerfed in the wa- 

 ter, being become fo faturate therewith, as 

 to leave no worn for air to pafs. 



After 20 days I picked the minium out 

 of the tube, and found the water had rifen 

 3 feet 7 inches, and would no doubt have 



rifen 



