MARYLAND GEOLOGICAL SURVEY 



193 



TABLE II. 

 Monthly and Annual Mean Temperatures at Bladensbueg.* 



Year. 



1855. 

 1856. 

 1857. 

 1858. 

 1859. 

 1860. 

 1861. 

 1863. 

 1863. 

 1864. 

 1865. 



35.5 

 21.7 



20.1 

 37.1 

 34.6 



27.2 



26.2 

 41.2 

 27.8 

 36.6 



40.2 



33.0 

 37.9 

 39.7 

 46.6 



39.0 

 33.0 

 37.1 

 33.8 

 30.1 



37.3 

 33.0 

 36.2 

 37.3 

 34.3 



43.6 

 38.5 

 39.0 

 39.9 

 49.2 



55.5 

 53.9 

 HA 

 51.9 

 50.8 

 51.1 

 54.6 

 48.4 

 50.3 

 51.6 

 57.7 



63.6 



69.3 

 61.7 

 fiO.5 

 63.4 



59.6' 

 60.8 

 65.1 

 67.1 

 65.1 



Mean 1 32.3 .33.7 40.8 51.7 ! 62.6 



70.3 

 74.6 



71.7 

 75.0 

 69.9 

 70.9 

 74.6 

 67.2 

 70.6 

 71.3 

 75.6 



73.0 



75.8 

 78.3 

 75.5 

 77.4 

 74.1 

 76.6 

 71.3 

 75.4 

 78.8 

 75.5 

 76.0 



73.4 



70.8 

 73.6 

 73.2 

 73.9 

 77.0 

 74.6 



'78^0' 

 79.6 

 73.0 



75.9 I 74.5 



yj 



67.8 

 64.7 

 67.3 

 64.1 

 65.6 

 63.5 

 63.6 



62.5' 

 65.4 



64.9 



54.1 



'seis' 



56.4 



50.5 

 53.8 

 5.'5.7 

 57.5 

 .^3.7 

 54.0 



45.4 

 43.4 



43.5 

 37.6 

 47.0 

 43.7 

 40.3 



46.8 

 44.0 



54 5 43.5 



35.1 

 29.3 

 34.1 

 37.6 

 33.7 

 31.6 

 33.9 



.S3. 9 



37.7 



34.0 



53.6 



'52^3' 

 .53.3 

 .53.8 



.53.1 



53.5 



54.9 



53.1 



*The station at Bladensbur,? was among the first established hy the Smithsonian 

 Institution. It was opened in December, 18.54, and continued in operation until August, 

 ISfiS, giving a record of about 11 years. Mr. Benjamin O. Lowndes was the observer 

 during the entire period. 



TABLE III. 

 Monthly and Annual Precipitation at Bladensbueg in Inches. 



Year. 



1856 



1857. 



1858. 



18.59. 



1860. 



1861. 



1863. 



1863 



1864. 



1865 



1.40 

 4.85 



2.73 

 2.93 



0.17 



3.15 



2.07 



5.04 



1.33 



0.91 



5.52 



3.04 

 4.49 

 4.31 



5.65 

 4.08 



4.61 



3.88 

 5.82 

 3.31 

 5.27 

 4.01 

 1.90 



5.11 

 5.66 

 3.37 

 5.73 

 2.07 

 3.35 

 3.23 

 4.54 

 2.97 



5.24 

 5.18 

 1.17 

 5.24 

 3.27 

 2.65 

 6.33 

 3.03 

 0.99 

 1.93 



2.29 

 3.92 

 4.12 



1.16 

 2.69 

 4.41 



4.77 



115.60 



1.33 



6.48 

 6.90 

 1.17 

 1.67 

 3.65 

 4.12 



OQ 



2.41 



1.42 

 2.54 

 5.75 

 3.26 

 3.01 



0.74 

 0.98 



1.96 



l.!J5 

 3.05 

 1.38 

 2.85 

 2.45 

 3.58 



2.25 



5.43 



2.. 56 



0.70 



4.04 



Mean. 



2.98 i 2.33 



3.86 3.97 3.89 I 3.50 I 4.30 ' 3.81 I 3.06 



3.54 1 2.64 



3.00 39.27 



TABLE IV. 



Monthly and Annual Mean Temperatures 



at Cheltenham.* 



Year. 



1901. 

 1903. 

 1903. 

 1904. 

 1905. 

 1906. 

 1907. 

 1908. 

 1909. 



31.2 

 33 



26.7 

 38.9 

 39.4 

 36.3 

 34.0 

 37.4 



29.0 I 



37.3 



27.1 



25.2 

 33.3 

 38.7 

 30.4 

 45.0a 



46.8 

 50.4 

 41.3 

 44.6 

 37.0 

 47.0 

 47.1 

 42.6 



.53.0 

 54.0 

 49.8 

 53.7 

 54.9 

 47.0 

 55.6 

 55.0 



63.1 

 63.5 



64.8 

 64.4 

 64.6 

 63.4 

 58.1 

 64.6 

 64.6 



71.4 

 69.7 



68.1 

 70.1 

 70.6 

 72.4 

 65.4 

 71.2 

 73.3a 



79.2 



75.5 



76.0 



74.1 



75.8 



74.4 



74.2 



77.6a 



73.9 



75.3 

 71.0 



70.4 

 72.3 

 73.6 

 76.2 

 71.4 

 72.2 

 73.6 



67.3 

 65.5 

 66.4 

 67.4 

 67.4 

 I 71.6 

 j 68.6 

 66.6 

 66.0 



56.3bi 



.56.8 



56.4 



53.5 



,56.9 



.55.6 



51.4 



63.6 



53.6 



40.5 

 51.0 

 41.3 

 43.1 

 43.5 

 45.7 

 44.7 

 46.3 

 51. 



33.0 

 33.4 

 30.7 

 30.6 

 36.3 

 35.6 



53.9 

 54.0 

 51.5 

 53.3 

 55.0 



37.9a 53.5 

 37.4 .55.1 

 33.1 55.5 



Average 33.3 



33.0 44.6 i .53.9 63.3 



70.3 75.6 I 72.7 



67.4 1 55.3 I 46.1 34.1 



53.9 



•The station at Cheltenham was opened by the U. S. Weather Bureau in May, 1901, 

 with Dr. W. G. Cady as the observer. He continued to serve until May, 1902, when the 

 worl? was turned over to the Magnetic Observatoi-y, U. S. C. and G. S., and so con- 

 tinued until July, 1905, when Mr. William F. Wallis became the observer. Mr. Wallis 

 gave up the work at the end of .Tunc. 1906. and Mr. .1. E. Burbank, the present 

 observer, took it up. The station was supplied from the beginning with the standard 

 Weather Bureau equipment. 



