under grussi/ Surfaces^ and under bare Surfaces. 



OBSERVATIONS 



preserved bare, at a Depth of 5 in, under the Surface of the Soil; made 

 25 ft. above the Sea, with a free Exposure to the South. 



at Eight o'clock p.m., together with the aerial Temperature in the Shade. 



a 



General Weather. 

 Morning . 



General Weather. 

 Evening. 



Observations. 



9 



Sun, clouds, slight wind,w. 



Rain, clouds, little wind, w. 



Grass shaved. 



10 



Chilly, clouds, dry wind, E.by s. 



Clouds, dry, chilly, wind, w. 





11 



Heavy rain, no wind, s.w. 



Cold, clouds, dry, windy, w. 





12 



Showery, wind and sun, s.w. 



Damp, cold, hazy, dry, s vv. 





13 



Warm, windy, clouds, s.w. 



Damp, chilly, cloudy, s.w. 





14 



Dry, warm, sun, windy, s.w. 



Warm, still, cloudy, no windjS .w . 





15 



Dry, calm, hazy, no sun, s. 



Dry, warm, cloudy, s.w. 





16 



Dry, dark, close, cloudy, s. 



Dry, windy, cloudy, s. 





17 



Dry, clouds and sun, still, s.w. 



Dry, cloudy, close, still, s.w. 





18 



Dry, sun, warm, still, s.w. 



Dry, clear, still (showers, mid- 

 day), s.w. 



Grass shaved. 



19 



Most genial, sun, calm, s.w. 



Heavy clouds, damp, windy, s.w. 





20 



Dry, mild, little wind, s.e. 



Warm, dry, sun, little breeze,s.E. 





21 



Dry, mild, no wind, s.e. 



Fine, dry, mild, s.e. 





22 



Dry, warm, no wind, s.e. 



Mild,wm, showery,little windjE, 





23 



Sun (heavy dew last night), s.e. 



Dry,wm (lightning), no wind, e. 





24 



Sultry, sun, no wind, s.e. 



Fine, dry, clouds, no wind, s.e. 





23 



Hot, sun(hvy dew last n),N.w.w . 



Clear, warm, no wind, s.e. 





26 



Hot, sun (hvy dew again)N. by w. 



Fine, warm, very clear, n. by w. 





27 



Fine, sun, warm, dry, n.w. 



Warm, dry, hazy, n.w. 





28 



Strong sun, no wind, n.w. [n.w. 



Warm, dry, sun, no wind, n.w. 



Grass shaved. 



29 



Fine, sun, windy, slight chill, w. 



Very warm, no wind (day sultry) 





30 



Dry, clouds, slight wind, n.w. 



Fine, slight clouds, wind, w.n.w. 





31 



Fine, sun, little wind, s. 



Dry, warm, still, s. 





1 



Clouds, fine, no wind, s. 



Rain, warm, hazy, s.w. 





2 



Rain, warm, no wind, s. 



Clouds, warm, no wind, s.w. 





3 



Sun, warm, little wind, s.w. 



Dry, riiild, Httle wind, s.w. 





4 



Sun, warm, light breeze, s.w. 



Dry, very win, light breeze,s.w. 



Grass shaved. 



5 



Cloudy, moist, little wind, s.w. 



Dry, mild, calm, s.w. 





6 



Clouds, dry, windy, s.w. 



Cloudy, warm, windy, s.w. 





7 



Sun, dry, light wind, w. 



Fme, temperate, calm, s.w. 





8 



Sun, dry, windy, w. by s. 



Fine, clouds, wind}^, w.by s. 





ciple of vegetable life, altogether distinct from the mere pheno- 

 mena of heat; to chemical or other forces, put in motion by the 

 assimilative powers of the plants; or to the simple effects of 

 varying powers of absorption and radiation. To the latter of 

 these conclusions I myself incline ; but one most interesting, 

 and, I believe, novel, fact is thus established; namely, that the 

 surface of our earth is considerably affected, as to its temperature, 

 by the vegetation that subsists upon it. Its temperature is proved 

 to be increased by this covering ; and we cannot fail to recognise 

 in this one of those innumerable and ever wondrous adaptations 



B 2 



