V. Observation of an extraordinary height of the barometer, December 21. 1721

Abstract

Y TP O N Thtirfdayt he lif t of ol> L / ferving the Barometer much higher than ufual r that Evening, between Seven and Eight a Clock, l fill’d aTubewfth vety clean Qukk-iilver, and found the. Height a little to exceed 30,72 Inches. By Eight the next Morning, a Wheel-Barometer,which hung in the lame Room, had rifen One tenth o f an Inch higher than it was the Night before, when the Expem ^inent was made ; at Ten a Clock, One fifth of an ihcB more : At which Time it was ar the highefl, be­ ing a little above 30*81 Inches ̂ Icnr ibbut Twelve at Noon it was fenfibfy lower, and continued falng aB t ie reft of the Bay . When the lower find of the Tube was firfi immersd Ihthe CMterifi # e <^fek4 h^r fer feme Time adher’d of the Gta&y but upon lhaking, i t ftfl