Meteorological Observations made at Clapton. 245 



To Mr. Tilloch. 

 Sir, — The following is an. extract from the Custom 

 House books for the years stated, upon the authenticity of 

 which you may depend. Can any of your philosophical 

 or medical correspondents account for the annual con- 

 sumption of such an immense quantity of narcotic poison ? 



Meteorological Observations made at Clapton in Hackney, 

 from Feb. 21, to March 20, 1812. 



Feb. 21. — A breeze from S.W. blew along masses of cu- 

 mulus, while cirrocumulus, cirrus, and cirrostratus, pre- 

 sented various appearances in a higher and calmer air. The 

 inosculation of the two stratas occasionally caused slight 

 nimbi. The wind became high towards evening, with hard 

 showers at night. 



Feb. 22. — Hough gales from the S. all day, with hard 

 showers of rain and bail, with some flashes of lightning 

 and claps of thunder ; in the fair intervals the various mo- 

 difications appeared in difi"erent stations. 



Feb. 23. — Clouds in two altitudes, the lower ones mov- 

 ing rapidly in the wind ; in the evening the cirrostratus pre- 

 vailed, while low flocks of scud flew under ; at night it formed 

 a fine veil all over the welkin, exhibited a halo, increased 

 in density, obscured the moon entirely, and ended in rain. 

 W. and S.W. 



Feb. 24. — Snow which had fallen during the night 

 melted ; in consequence of which, and of the late hard rain. 

 Hackney Brook overflowed; there was also considerable 

 flood in the marshes of the Lea. Cloudy morning and clear 

 night. N. and N.W. 



Feb. 25. — A cold S. wind with much cLud in different 

 strata ; loose flocky cumuli below, followed by rain and 

 wind. The marshes of the river Lea flooded. 



Feb. 



