!58 Mr. Howard's Meteorological Journal. [August, 



REMARKS. - 



Sixth Month.- 6. Since this period came in, the weather has afforded little 

 variety. The days have been serene, with breezes, which commonly increased 

 with the temperature, and died away at sun-set : the nights nearly calm, with dew, 

 and a peculiarly clear, but not high-coloured twilight. Thunderclouds have shown 

 themselves at intervals in the horizon; and to-day there are large plumose Cirri. 

 8. My brotherobserved, about nine, p. m. a bright, blue meteor descending from the 

 zenith to theNW. 10. After sun-set, some beautiful diverging shadows on a pure, 

 dilute, carmine tint in the NW. 11. Thunder clouds about. 12. A thunder group 

 in the N and NW : the Cirrostratus for a short time assumed the form of the Cyma, 

 and several discharges were heard while the Nimbi expanded their crowns within 

 ■view : after this, it lightened in some clouds to the SE. 13. Cumuli, mingled with 

 haze and Cirri, were followed in London by a smart thunder shower; while at 

 Tottenham there fell but little rain: a lunar corona ensued. 14. A little rain, 

 a.m.: a large, faint lunar halo. 15. A few drops at evening. 16. Cloudy: a 

 strong breeze. 17. A light gale, with a rainy sound, and much cloud; but the 

 showers proved scanty. 18. Much cloud, chiefly Cumulustratus : after some light 

 showers, and appearances of rain and thunder to the southward, the twilight 

 cleared up orange. 19,20. Windy, cloudy : light showers; Cumulus, Cirrocumu- 

 lus. 21. Cumulus, with the lighter [modification above, increased to obscurity j 

 wind through the day, and small rain, evening. 22. Windy, cloudy morning : this 

 day more decidedly showery. At 11 p. m. a shooting star descended to the SE. 

 23, 24. More calm, with summer clouds in various modifications. 25. A very 

 slight rain, a. m. followed by fine blue sky, and various clouds carried by a strong 

 breeze. 



RESULTS. \ 



Winds in the fore part light and Easterly, in the latter part Westerly and stronger. 



Barometer : Greatest height 30*33 inches- 

 Least 2953 



Mean of the period 29998 



Thermometer: Greatest height 89° 



Least 33 



Mean of the period (at the Laboratory) 62'36 



Mean of the Hygrometer (the latter week) 48 



Evaporation (a few days estimated) . , 4'50 inches. 



Rain. °'43 inches. 



The clear hot sunshine of the greatest part of this period had the effect of esta- 

 blishing the summer in our climate in a manner to which we have long been 

 unaccustomed. The deeper green of the foliage and the richer colour of many 

 flowers in particular presented a striking contrast to their appearance during the 

 last two seasons ; while the soil, parched and cracked over the whole surface of 

 our loamy meadows, bore ample testimony to the continued receptive power of 

 the dry atmosphere. Yet the turf (to use a familiar phrase) did not burn, proba- 

 bly in consequence of the supply of moisture still left at a certain depth in the soil. 



