TABLES OP MEAN TEMPERATURES. 



133 



Jan. 



Mar. Apr. 



May. June. 



July- 



Aug. 



Sept. 



Hourly Means of Temperature. 

 Philadelphia, G-irard College,' Penn. Lat. 39° 58'. Long. 75° id' W. of G. 



Alt. 114 feet. A. D. Bache. June, 1S40, to June, 1845, inclusive. 



Mdn't 



30°. 90 



30°. 10 



39°-25 



46°. 60 



54°- 16 



63°-53 



68°. 06 



67°.68 



59°-76 



47°-74 



38°-46 



3i°-i4 



48°. II 



I 



30'35 



29.67 



38.60 



45-76 



53-54 



62.82 



67-32 



67.08 



59-50 



47-36 



38-32 



30.72 



47-59 



3 



30.20 



29 



28 



38-05 



44-96 



52.82 



62.25 



66.76 



66.60 



59.10 



46.78 



37-94 



30-36 



47 



09 



3 



29.92 



28 



73 



37-75 



44.60 



52 



14 



61.60 



66.26 



66.44 



58.64 



46.36 



37-66 



30.06 



46 



68 



4 



29.72 



28 



45 



37-58 



44.18 



51 



48 



61.13 



65.82 



65. 88 



58.32 



45.88 



37-18 



29.78 



46 



28 



S 



29.50 



28 



22 



36.78 



44.08 



51 



60 



61.60 



66.04 



65.78 



58.10 



45-46 



36.90 



29.46 



46 



12 



6 



29.22 



27 



95 



36.77 



44-54 



53 



04 



63-03 



67.10 



66.36 



58.08 



45.12 



36.64 



29.22 



46 



42 



7 



29.10 



28 



08 



37-42 



46.08 



55 



16 



65-45 



69.40 



68.20 



59-94 



46.50 



36.96 



29.52 



47 



65 



8 



29.52 



29 



63 



39-40 



48. 12 



57 



44 



67-85 



71.66 



70.48 



62.40 



48.96 



38.20 



30.02 



49 



47 



9 



30. So 



31 



55 



41.40 



50.10 



59 



64 



69.78 



73-62 



72.40 



64-54 



51-3S 



40.10 



31.40 



51 



39 



10 



32.32 



33 



60 



43-25 



52.08 



6i 



22 



71-45 



75-24 



74.22 



66.62 



53-54 



41.82 



32-94 



53 



19 



II 



33-65 



35 



32 



45-27 



53-8b 



62 



70 



72-95 



76.74 



75-86 



68.30 



55-20 



43-28 



34-46 



54 



80 



Noon 



34.88 



3b 



70 



46-75 



55-46 



63 



86 



74-35 



77.96 



77.16 



69.64 



56.70 



44,48 



35-54 



5b 



12 



I 



3S-87 



37 



83 



47-80 



56.70 



64 



90 



75-37 



78.80 



77-94 



70.56 



57-76 



45.46 



36.28 



57 



10 



2 



36. S3 



38 



47 



48-55 



57-68 



65 



80 



76-25 



79-54 



78.84 



71-38 



58-54 



46.14 



36.88 



57 



88 



3 



36.60 



38 



73 



49.10 



57-94 



66 



26 



76-54 



79-82 



79.08 



71-48 



5S-46 



45-88 



36.66 



58 



04 



4 



36-37 



3S 



50 



49.00 



58.00 



66 



46 



76.67 



79.76 



78.98 



71-40 



58.20 



45-40 



36.28 



57 



92 



5 



35-05 



37 



35 



47-S5 



57-14 



66 



00 



75-77 



79.10 



77-94 



70.00 



56-34 



43-88 



35-06 



56 



79 



6 



34-23 



35 



70 



45-98 



55-74 



64 



44 



74-43 



77-76 



76-52 



67. So 



54.14 



42-54 



34-36 



55 



30 



7 



33-42 



34 



50 



44.85 



53-10 



61 



86 



71-93 



75.62 



74-44 



65.60 



52.48 



41-50 



33-62 



53 



57 



8 



32-75 



33 



23 



43.80 



51.08 



59 



22 



68.93 



73-04 



71.98 



63-36 



51.00 



40.66 



33-00 



5« 



83 



9 



32-17 



32 



47 



41-35 



40.70 



57 



64 



67.28 



71-32 



70.60 



62.12 



49.98 



40.00 



32.60 



50 



bo 



10 



31-58 



31 



68 



41.00 



48.46 



56 



28 



65-93 



70.04 



69.46 



60.92 



48.82 



39-50 



32.16 



49 



65 



II 



31.12 



31.10 



40.28 



47-40 



55-06 



64-63 



69.08 



68.64 



60.34 



48.06 



39.02 



31-70 



48.86 



Mean 



32-32 



32-79 



42.41 



50.56 



5S.86 



68.81 



72.74 



72.02 



64.08 



51.28 



40.75 



32-63 



51.60 



No of 



J 



























years 



S 4 



4 



4 



5 



5 



6 



5 



5 



5 



5 



5 



5 







Hourly Means between 3 A. M. and 9 P. M. 

 Jackson, Jackson Co., Ohio.^ Lat. 39° 02'. Long. 82° 32' W. of G. 



Alt. 700 feet. G. L. Crookham. May, 1851, to June, 1852, inclusive. 



Mdn't 

 I 



























2 

 3 



20.9 



31-5 



37-6 



40.9 



52.2 



57-8 



.64-5 



61. 1 



54-9 



41.0 



36.1 



23.2 



4 



20.5 



31.2 



37-3 



40.6 



51-8 



56.5 



61.5 



60.5 



54-2 



40.0 



35-7 



23.0 



5 



20.4 



30.8 



36-9 



40.4 



52.3 



56.8 



61.7 



fco.5 



53-7 



39-4 



35-1 



22.5 



6 



20.3 



30.3 



37-3 



41. 1 



54-3 



59-3 



63-7 



62.0 



54-2 



39-3 



34-4 



22.4 



7 



20.1 



30-9 



,38.7 



44.0 



58.4 



63-9 



68.0 



65.6 



57-2 



40.0 



34-3 



23.0 



8 



21.6 



33-1 



42.4 



47.2 



63-3 



68. s 



73-9 



70.1 



63-5 



45-9 



35-3 



23.8 



9 



24.7 



35-3 



46.0 



50.2 



66.9 



72.1 



77-0 



73-6 



6S.9 



52.5 



38.8 



26.9 



10 



28.3 



37-9 



48.1 



53-1 



70.0 



74-9 



80.0 



76.2 



72.9 



56-9 



41.8 



29.7 



II 



30.7 



40-3 



50.2 



55-0 



71.8 



77-1 



S3.0 



79.1 



75-9 



60.5 



44-2 



31-7 



45- 1 

 44-4 

 43-9 

 43-5 

 42.7 

 42.5 

 43-2 

 45-3 

 49.0 



52.7 

 55-8 

 58-3 



' The observations between June, 1840, and Dec. 1841, inclusive, were taken bi-hourly, and those between June, 

 1840, and Feb. 1841, inclusive, 25 minutes after the full hours; those between March, 1841, and Dec. 1841, inclusive, 

 15 minutes after the full. hours. By interpolation the results -were changed to refer to the full hours and for evei-y hour. 

 The means for each hour for the whole period of observations were then combined separately for each month. There 



no record for Jan., Feb., and March, 1843. For record see "Observations at the magnetical and meteorological 

 Observatoi-y." Washington, D. C, 1847, fo""" volumes. 



2 MS. in Sm. Coll. 



The record begins with Jan. 1851, but is not sufficiently regular for use till May, 185 1. Numbers interpolated at 

 the following hours: 3 A. M. May, 1851; 9 A. M., 3 P. M., and 9 P. M. May, June, July, 1851. The annual means 

 for 10, II P. M., o, I, and 2 A. M. are graphically interpolated. 



There are many omissions in the record. Some scattering observations between the hours 10 P. M. and 3 A. M. 

 cannot be utilized. 



