364 METEOROLOGICAL OBSERVATIONS. 



REFLECTION OF FOG. 



When people walk in a deep white fog by night with a 

 lanthorn, if they will turn their backs to the light, they 

 will see their shades impressed on the fog in rude gigantic 

 proportions. This phenomenon seems not to have been 

 attended to, but implies the great density of the meteor at 

 that juncture. WHITE. 



HONEY DEW. 



June 4th, 1783. Fast honey dews this week. The 

 reason of these seem to be, that in hot days the effluvia of 

 flowers are drawn up by a brisk evaporation, and then in 

 the night fall down with the dews with which they are 

 entangled. 



This clammy substance is very grateful to bees, who 

 gather it with great assiduity, but it is injurious to the 

 trees on which it happens to fall, by stopping the pores of 

 the leaves. The greatest quantity falls in still close 

 weather ; because winds disperse it, and copious dews 

 dilute it, and prevent its ill effects. It falls mostly in 

 hazy warm weather. WHITE. 



MORNING CLOUDS. 



After a bright night and vast dew, the sky usually 

 becomes cloudy by eleven or twelve o'clock in the afternoon, 

 and clear again towards the decline of the day. The reason 

 seems to be, that the dew, drawn up by evaporation, 

 occasions the clouds ; which, towards evening, being no 

 longer rendered buoyant by the warmth of the sun, melt 

 away, and fall down again in dews. If clouds are watched 



