328 Dr. Darlington’s Pluviometrical Observations. 
fell either rain or snow, is about 91 out of 365; or about 
one day in four, of the year. 
Tasxe, showing the number of days of fans: weather in 
each month, in the years note 
| Months. | 1817 | -181¢| 1819 | 1820 | 1821 | 1822 bean 
January - - 7 5 - = 8 6 64 
February ae 5 8 ee be 6 | 73 
March a bev dara: ice) 7 
‘ke eat 6 4 8 | 10 | 8 
Mey sh S298 betes 4 | 43 |: #4122 
>, 
June ee Bae Oe to) 8 does 
Suly 9 8 9 9 9 | 9 
August 9 10 9 6 § 4 y | 
September 6 8 8 3 II 7 3 
October 9 3 4 5 6} 4s 
November 6 6 } ae 5 + 10 6 
mber Bega fos 7 9/91] 8 
Weve... ys ch: 60.4108: Lig 6 {99 | a lg 
he latter part of the summer of 1822, was marked by a 
te wap mnch so, that many wells and springs 
hup, whic never before failed within the memory 
ie oldest inhabitants. Even the rain which did fall, » 
seemed to be speedily dissipated, without producing any re- 
freshing effect upon vegetation. The season was also re- 
markable for the prevalence of intermittent ae in the~ 
neighbourhood of West-Chester; a — of d which 
has hitherto been extremely rare in that vic cially F Along 
the waters of the Schuylkill, and Susquebanna, levers of a 
more senna. re Steps extensively. 
here ‘respectfully, 
your most obed’t. 
WM. DARLINGTON. 
Prof. Sinuiman, New-Haven. 
