204 PHILOSOPHICAL TRANSACTIONS. [aNNO 1738. 



1736, May 26 .... 29-15 rain 29.15 The mercury below 28 inches. 



27 29.12 rain 292 1734, Dec. 15, at 27.9. 



28 -29.28 rain 29.23 1735, Jan. 8. at 27.9- 



29 ... . 29.37 wind, cloudy, rain. In winter, before frosts, the mercur)' generally 



1735, Feb. 22 29.43 rises pretty fast. 



23 28.82 1735, Dec. 12. 



24 ... . 28.9 Before a thaw the mercury falls. 



25 28.76 great rain. 1735, Dec. 13. 



Just after hot or sultry weather, the mercury 17. 



generally falls. 1736, Feb. 9. 



See 16 Sept. 1731. The mercury falls suddenly before a great snow. 



8 Aug. 1734. 1731, Jan. 4. 



After the aurora borealis, there generally follow 1736, Feb. 8. 



high winds. 21. 



27 Oct. 1733, a large aurora borealis, and the When the mercury falls for high winds, and 



28th, 29th, and 30th, high winds. it continues to fall when that wind is come, it is 



See 23 Jan. 1734. likely to be tempestuous, or continue some time. 



The mercury falling pretty much, and neither unless rain succeeds, 



wind nor rain succeeded. 1736, 22 Nov. . 29.62 fair, warm. . 29.62 



1733, from the 18th to the 21st it fell 41, and 23 29.49 windy, warm29,32 wind. 



no wind or rain at all till the 25th. 24 29.1 high wind .. 28.88 28.73 



Sultry weather generally makes the mercury stormy, 



fall soon after. Some of these collections are quite contradic- 



1734, Aug. 8. tory to any settled rules, and such will happen. 

 After a great storm the mercury rises very fast, and others confirm them ; but he has collected so 

 1734, Aug. 11. very few of a sort, though the diary furnishes a 

 1736, Feb. 6. great many, that till more are in this manner 

 Before great winds the mercury falls very soon, collected, it will be very doubtful to form any 

 1734, Aug. 26. rules from them. 



1736, Feb. 8. 



An Account of a Sulphureous Vaporiferous Cavern in a Quarry at Pyrmont, 

 similar to the Grotta del Cane at Naples. By Mr. Misson and others. Com. 

 municated to the Royal Society by John Philip Seip, M. D. Aulic Councillor and 

 Archiater to the Prince of Waldech, and F. R. S. N" 448, p. 266. 



An account of a sulphureous vaporiferous cavern in a quarry at Pyrmont, 

 near to the famous chalybeate springs. Birds, including poultry, and the 

 smaller quadrupeds, such as dogs, cats, &c. were suffocated on being exposed 

 for a sufficient length of time to the vapour emitted from this cavern, which 

 in this respect resembles the Grotta del Cane at Naples. When exposed to 

 this exhalation but for a short time, and afterwards brought out into the open 

 air, the animals commonly revived. A candle would not burn in this cavern. 

 [It would seem that this supposed sulphureous vapour consisted of the so called 

 fixed air, or carbonic acid gas.] 



On the Effects of Dampier's Powder, in curing the Bite of a Mad Dog. By 

 John Fuller, Esq. Jun. F. R. S. N° 448, p. 272. 



Mr. Fuller imagined the use of the lichen cinereus terrestris with black 



