MARYLAND GEOLOGICAL SURVEY 



197 



TABLE X. 



Monthly and Annual Mean Temperatures at Fort Foote.* 



Tear. 



1871. 

 1872. 

 1873. 

 1874. 

 1875. 

 1876. 

 1877. 

 1878. 



Jan. 



29.9 

 29.4 

 37.9 

 27.8 

 10 b 

 29.0 

 33.2 



Mean 32.5 



Feb. i Mar. 



Apr. 



26.5 : 34.5 



32.8 39.3 

 35.3 43.6 



28.9 39.6 

 37.2 ! 39.5 

 38.0 40.8 

 39.2 I 19.3 

 34.0 40.9 



54.6 

 52.3 

 16.3 

 48.9 

 51.1 

 52.9 

 57.9 

 52.0 



May 



67 

 63.3 

 63.0 

 63.5 



1 I 



June July Aug. Sept. 



.... 72.7 75.4 58.6 



74.8 ' 81 1 79.0 67.9 



73.5 77.9 73.9 66.5 



75.6 [ 76.6 71.5 69.0 

 73.4 j 77.1 71.8 I 65.0 



64.5 I 75.4 ! 79.9 74'.7 i 65.2 



61.1 I 74.0 i 78.0 75.9 i 86.9 



Oct. 



62.8 j 68.3 

 63.5 73.6 



80.3 75.2 68.9 

 78.0 i 74.7 I 66.0 



.52.0 

 54.8 

 53.3 

 55.1 

 54.9 

 51.1 

 58.1 

 56.5 

 54.5 



Nov. 



37.0 

 40.0 

 39.3 

 43 7 

 41.6 



Dec. 



30.4 

 28.0 

 38.6 

 37.5 

 36.0 



44.2 I 26.6 

 16.9 j 11.8 



41.8 I 34.1 



Annu'l 



.53.2 

 53.3 

 54.6 



52.1 

 54.1 

 65.3 



53.8 



TABLE XT. 



Monthly and Annual Precipitation at Fort Foote in Inches. 



Year. 



1871. 



Jan. Feb. 



1872 0.70 I 0. 



1873 i 3.31 1.36 



1874 i 1.60 0.75 



1875 ! 1.89 1.34 



1876. 



1877. 

 1878. 



Average 



0.74 2.68 

 1.64 1.12 

 2.00 ! 2.07 

 1.70 1.93 



Mar. 



5.31 

 0.87 

 1.93 

 3.08 

 3.77 

 2.30 

 2.91 



Apr. 



2.13 

 2.33 



5.75 

 1.78 

 2.26 

 3.27 

 2.14 

 2.81 



May June 



2.21 



1.31 

 2.44 

 1.83 

 1.96 

 1.61 

 4.30 

 2.67 



July 



3.37 

 3.42 j 0.86 

 1.86 4.93 

 1.81 3.53 



Aug. iSept. Oct. Nov 



2.38 ! 2.50 3.00 ! 3.22 



5.88 4.34 4.15 

 8.37 1.63 3.52 



2.37 

 2.40 



1.61 



0.11 ' 1.59 



1.70 I 1.77 11.07 : 1.67 1.38 ; 4.27 



1.88 

 4.65 

 5.31 

 2.95 



4.01 

 2.95 



5.76 

 3.. 37 



1.65 7.21 1.51 2.27 



2.81 j 6.08 5.58 4.99 



6.39 I 2.13 2.08 



5.02 { 3.93 2.67 3.02 



Dec. Annu'l 



1.19 

 2.33 

 0.76 

 2.23 

 2.13 

 0.23 

 1..52 



1.53 



34.71 

 38.68 

 29.29 

 .34.21 

 30.20 

 38.55 



34.49 



*Tlie observations at Fort Foote were 

 was Dr. John W. Bayne, and were taken 

 whole system of observation made under 

 of the Army Medical Department. 



made by the post surgeon who, at the time, 

 in accordance with the rules governing the 

 the direction of the Surgeon-General's OfEce 



