MARYLAND GEOLOGICAL SURVEY 



195 



TABLE VII. 

 Monthly and Annual Mean Temperaturks at College Park.* 



♦Observations wore made at College Park from February. 1861. to Febrnary. 1862, 

 also during the month of .luly, 1862, by Dr. C. M. Jones, of the Maryland Agricultural 

 College, under the auspices of the Smitlisonian Institution. For some reason the work 

 was then discontinued until July, 188S, when it was again taken up under the direction 

 of the United States Weather Bureau and the Maryland State Weather Service by 

 Prof. Henry Jacob Patterson, also of the Maryland Agricultural College. The instru- 

 ments in use belong to the State of Maryland. Draper's self-recording thermometer 

 is also in use. The station is located in a gently undulating country. 



TABLE VIII. 



Extreme Temperatiires at College Park. 



