MAKTLAND GEOLOGICAL SURVEY 



165 



the highest mean on record. The lowest, 35.8°, occurred in February, 

 1895, giving a range in monthly means of 56.0°. 



TABLE XVI. 

 Highest Temperatures at Charlotte Hall, Md. 



' On other dates also. 



TABLE XVII. 



Lowest Temperatures at Charlotte Hall, Md. 



' On other dates also. 



The mean temperature of spring is 54°, of summer, 75° : autumn, 

 58°, and winter, 38°. Here also autumn is 4° degrees warmer than 

 spring. 



