444. 



Meteorology. 



showing the parts as they are generally found, and the other {fig. 93.), 

 a more perfect one, which I was fortunate enough to discover. The greatest 



projection is not more than three eighths of an inch. They are found 

 rather plentifully in a bank on the right side of the road, shortly after 

 entering the park from Llandilo. The drawings are the exact size of the 

 fossil. I am, Sir, yours, &c. -— L. E. Reed. Tiverton^ Sept. 27. 18,30. 



Art. IV. Meteorology. 



A FOREWARNER of foul Weather. — It may be a useful piece of inform- 

 ation for agriculturists, or those concerned in getting in their crops on the 

 approaching season, to describe the appearance of a small cloud, which, 

 from its rapid formation and disappearance, is likely to escape the observ- 

 ation of most persons, but which from my own experience I have found a 

 very faithful forewarner of foul weather. It appears mostly in the mild 

 weather of spring, summer, and autumn, when its warning token becomes 

 most acceptable. I will endeavour to describe it in the best manner I 

 can : — It is a small, delicately soft, thin, white, curved cloud, formed sud- 

 denly upon the summit of those fine heaped clouds (termed cumuli) which 

 often prevail in warm weather, and appear to tower up to a prodigious 

 height. It is necessary to keep a watchful eye upon the summit of the 

 cumulus. When this little film, which I term " the storm cap," appears, it 

 lies closely over the rounded summit, like a white silken web : in a very 

 few seconds it will disappear ; sinking, I suppose, into the cumulus ,• but in 

 a little time, and when heavy foul Weather threatens, the film again ap- 

 pears, disappearing as shortly as before. Last summer this " storm cap " 

 was often to be seen, and how much foul weather succeeded I well re- 

 member. So confident do I feel in this little warning cloud, that I should 

 entertain no fear of foretelling in this, my letter, the threatening weather, 

 within 24 to 48 hours, and invite the editor to testify the reality by a 

 note. — B. Laytonstone, April, 1830. 



