CATALOGUE. — SIETEOROLOOY, WEIGHT OF THE ATMOSPHERE. 



463 



*Ephemeiides Soc. Palat, 



Toalcio on a variation of die barometer. Roz. 

 XX. 83. 



Dangos on tiie periodical variation of the ba- 

 rometer. Roz. XXX. 260. 



Kirvvan. Ir. tr. 1788. 11.43. Roz. XXXIX. 

 100. 



Legentil. Vo^-age. I. 526. 



The barometer does not vary at Pondicherry. 



Fontana dalle altezze barpiiietriche saggio 



analitico. 4. R. S. 

 Fontana on the mass of the atmosphere. Ac. 



Sienn. V. 76. 

 Cotte on the variations of the barometer in 



different places. Roz. XLI. 54. XLII. 



340. 

 At Bourdeaux and at Montmorency, 12 changes out of 19 

 were the same wa) , 7 the contrary way. 



Cotte on the barometer. Ph. M. I. 208. 

 Franceschini on the height of the barome- 

 ter. Soc. Ital. V. 294. 

 As. Res. IV. 195. Ed tr. IV. H. 25. 



Balfour found the barometer in April, at Calcutta, rise a 

 little from 6 in the morning to lo, then fall till 6, rise till 

 10, and fall till 6 again. The difference is sometimes .1, but 

 generally less than .05, depending probably on some reci- 

 procation of winds. 



Due la Chapelle on the diurna;! variations of 

 the barometer. B. Soc. Phil. n. 21. Gilb. 

 II. 361. 



Pugh sur la pesanteur de I'atmosphere. 4. 

 Rouen, 1800. R. S. 



Biich on the variations of the barometer. 

 Journ. Phys. XLIX. 85. Gilb. V. 10. 



Humboldt on the barometer in South Ame- 

 rica. Ph. M. IX. Q.85. 



From g in the morning it falls till 4, then rises till 11, falls 

 till J past 4, and rises till g again, in all weathers. 



ZachMon. corr. III. 6Q, 543. 



Burckhardt finds the mean height of the barometer 

 greater by .23 when the wind is E. than when S. 



Accountof the diurnal variations of the baro- 



nictefj from Peyrouse's Voyages. Ed. tr. 



V. 3. 

 Dalton. Manch..M. V. 666. 



Thinks that the same barometrical variations generally 

 extend over all Europe without a day's difference. But 

 Cotte's observations seem to be inconsistent with this opi- 

 nion. 



In these climates, the barometer is generally lowest at 

 noon and at midnight. The mean height is greatest at the 

 equinoxes, but greater in summer than in winter. Cavallo. 



The usual scale of the barometer is, 31 , very dry or hard 

 frost; 30.5, settled fair or frost ; 30, fair or frost ; 29. 5, 

 changeable ; 29, rain or snow ; 28.5, much rain or snow ; 

 28, stormy. Any rapid change is said to foretel bad weather. 



The diurnal variation of the barometer has been found to 

 be more sensible at sea than on shore, especially in inland 

 places. It is possible that currents of air from heat may be 

 concerned in its production. 



Particular Barometrical Obser- 

 vations. 



Plot on the weather at Oxford, with a baro- 

 metrical diagram. Ph. tr. 1685. XV. 

 930. 



Beeston on the barometer in Jamaica. Ph. 

 tr. 1696. XIX. 225. 



Variation only .3. 



Cunningham on the barometer in China. Pb. 

 tr. 1699. XXI. 323. 



Variation .0 or .7. Latitude 24° 20'. 



Toaldo novae tabulae barometri aestusque 

 maris. 4. R. S. 



Roxburgh. Ph. tr. 1778. 180. 

 At Fort St. George. Variation .3. 



Fleuriaii on the mean height of the barome- 

 ter at the sea side. Journ. Phys. XLVII. 

 (IV.) 158. 



Variation at Columbo. 36. Ph. M. X. 172. 

 28 ia^.lFr. or .7644.™ 



Manch. M. V. 



The surface of the mercury moves annually about 8d 



inches at Kendal ; in London much lees. 



