ON THE 
EXCESS OR DEFICIENCY 
ABOVE OR BELOW THE AVERAGE 
* OF THE 
JEAN TEMPERATURE OE EVERY 
DAY, MONTH, AND YEAR 
FROM ALL 
rHERMOMETRICAL OBSERVATIONS 
TAKEN AT THE 
HORTICULTURAL GARDENS 
AT 
CHISWICK 
FROM THE BEGINNING OF 1826 TO THE END OF 1869 
C 
