400 Mr. Howard's Meteorological Journal. [May, 1818. 



REMARKS. 



Third Month. 1. Cirrocumulus followed by Cumulus and Nimbus: squalls, with 



hail and rain : the bow at nine, a.m. and again at three, p.m. 2. Fine, a.m. with 

 clouds, as yesterday: wet, windy, p.m. 3. Hoar frost: fine, a.m. : clouds and 

 wind, p.m. : rain, with large hail in the night. 4. Fine morning : the barometer, 

 which had gone somewhat lower than here noted, rising abruptly: having risen 

 about four-tenths, it took to falling again rapidly : there was a completely over- 

 cast sky (with haze in broad streaks, converging in the SW, and scud moving 

 swifily under it) till dark ; when it began to rain, and the wind rose to a greater 

 degree of violence than for some years past, raging thus from SE and SW till 

 past midnight ; when it abated, the barometer appears to have turned to rise more 

 abruptly than before, having gone down an inch in 15 hours (the actual lowest 

 point 28-35 inches) ; there is said so have been much thunder and lightning after 

 midnight; the barometer fell, not uniformly, but by fits, at intervals of about a 

 quarter of a minute, as the more violent gusts of wind came over. 6. Fine, a.m. : 

 squally, with hail and rain, p.m. 6. The same. 7. Wet, stormy : much wind at 

 night, with lightning far to the S and SE. 8. Fair, with Cirrus and Cumulusi 

 the latter crossed with streaks of Cirrostratus: Nimbi succeeded with showers: 

 windy night. 9. Fair, with wind and Cumulus : the clouds assume a more tranquil 

 aspect : a little snow this evening. 10. Some fine specimens of Nimbus to-day, 

 from which a very little snow fell : clear night. 11. Cirrus: windy: in the night 

 some rain, followed by snow from the N. 12. The ground covered with snow : 

 Cirrus, followed by Cumulus and Nimbus: showers. 13. Rain, snow, and sleet, 

 early:' various modifications of cloud to-day : at night, a few drops. 14. Hoar 

 frost : some rain, p.m. and evening: lunar halo. 15. Windy: some showers. 

 16. Various modifications of cloud, a. m. ending in Nimbus, and a shower with 

 hail, p.m.: at night, calmer than of late, with a lunar corona. 17. Fair, a.m.: 

 turbid sky above, with Cirrus, Cirrostratus, &c. : windy. 18. Close Cumulo- 

 stratus most of the day : windy, at night. 19. Cumulus, with Cirrus: windy, p.m. 

 tendin" to S: a little rain in the night. 20. The clouds gradually thickened, as 

 for rain ; but a brisk wind carried them off to the SE : hygrometer at five, p. m. 

 36°. 21. Hoarfrost: the roads dusty: showers, p.m. 22. Some showers, with 

 hail from NW : fine, p.m.: all night a hard gale from about SW with rain. 

 23. Morning wet, and stormy : fine, with clouds (among which was the Cumulus 

 capped), p.m.: night, pretty calm. 24. Fair, a.m.; then a hail shower : much 

 wind with rain, in the night. 25. Some hail showers : large Cumuli, Nimbi, &c. 

 26. A steady rain from SE, with little wind, a.m. : the rain ceasing, p.m. : the 

 wind went by S. to NW, and so probably by N to NE, where it was on the 

 morning of the 27th, the barometer having risen rapidly with a uniform motion : a 

 shower p. ro. 28. Fair, gloomy. 29. Fair, with Cumulut and Cirrostratus. 



RESULTS. 



Winds Westerly. 



Barometer : Greatest height 30*26 inches ; 



Least (observed) 28*50 inches; 



Mean of the period 29 - 47 inches. 



Thermometer: Greatest height 52° 



Least 27° 



Mean of the period 39'Ky> 



Mean of the hygrometer 65° 



Evaporation 1*10 inches. 



Rain 375 inches. 



Character of the period for the most part tempestuous, with frequent rains, the 

 barometer running through a series of sharp depressions till near the close, whe« 

 it suddenly assumed the elevation of fair weather. Almost all the showers, from 

 the first, were more or less mingled with hail. 



Tottenham, Fourth Month, 21, 1818. L. HOWARD. 



