148 TABLES OP DIFFERENCES OF MEAN TEMPERATURES. 



Hour. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



J"iy- 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Year. 



Brooklyn Heights. — Continued. 





3 



^ 



Q 











^ 



Q 



Q 











„ 



Q 



Q 



Noon 



+3-0 



+3-6 



+4-9 



+6.7 



+6.2 



+7-1 



+3-5 



+5-4 



+5-6 



+4.8 



+4.2 



+2.9 



+4.8 



I 



+3-6 



+4.5 



+5.6 



--7.8 



+6.4 



+7-7 



+4-4 



+6.3 



+5-6 



+5-3 



+5-1 



+3-4 



+5-5 



2 



+3.9 



+4.6 



+6.4 



--8.1 



+6.4 



+8.0 



+4.4 



+ 5-0 



+ 5-5 



+5-8 



+ 5-2 



+3-7 



+5.6 



3 



+3-4 



+4-5 



+6.5 



+7.8 



+5-7 



+7-9 



+4.S 



+4-9 



+5-3 



+5-5 



+5-1 



+3-4 



+5-4 



4 



+ 2.9 



+4.0 



+5-5 



+6.2 



+5-2 



+7.0 



+4-4 



+ 4.0 



+4.5 



+4-4 



+3-7 



+2.6 



+45 



5 



+ 1.8 



+3-2 



+4.2 



+4.6 



+4.0 



+5-3 



+3-6 



+3-1 



+3-4 



+3-0 



+ 1-5 



+ 1-7 



+3-3 



6 



+ I.I 



+ 1.9 



+2.6 



+2.7 



+2.4 



+3-4 



+2.3 



+ 1.8 



+2.1 



+2.2 



+0.6 



+0.9 



+2.0 



7 



+0.6 



+ 1.2 



+ 1-5 



+0.9 



+0.8 



+ 1-5 



+ 1.1 



+ 1.0 



+ 1.1 



+0.9 



— 0.1 



+0-3 



+0.9 



8 



o.o 



+0.7 



+0.7 



—0.4 



— 0-3 



—0.4 



+0.3 



— 0.1 



+O.Z 



— 0.2 



—0.5 



0.0 



0.0 



9 



— 0-3 



+0.1 



+0.2 



—1.4 



—1-3 



—1-5 



—0.6 



—0.9 



—0.6 



—0.6 



—0.7 



—0.6 



—0.7 



lO 





-0-3 



— 1.2 



—31 



— 2.0 



— 4.0 



— 1.2 



—1-7 



—1.4 



— 1.0 



—0.8 



— I.I 



—1-5 



II 



— I.O 



—0.9 



—2.9 



—4.1 



—2.9 



-5-4 



— 2.0 



—2.3 



— 2.2 



— 2.1 



—1.4 



—1.4 



—2.4 



Comb's 





























lO, lO 



0.2 



+0.4 



+0.4 



0.0 



+0.3 



0.0 



— 0.1 



+0.3 



+0.3 



+0.5 



+O.S 



— 0.2 



+0.2 



6,2,9 



+0.3 



+°-3 



+0.6 



+0.3 



0.0 



+0.3 



+0.1 



0.0 



+0.1 



+0.8 



+0.4 



+0.4 



+0.3 



6, 2, lO 



+0.2 



+0.1 



+0.2 



— 0.3 



— 0.2 



— 0-5 



— 0.1 



— 0-3 



— 0.2 



+0.7 



+0.4 



+0.2 



0.0 



7,2,9 



+0.3 



+0.3 



+0.9 



+0.8 



+0.8 



+ 1.4 



+0.3 



+0.3 



+0.4 



+0.8 



+0.4 



+0.5 



+0.6 



7.2,9bi, 



+0.2 



+0.2 



+0.7 



+0-3 



+0.2 



+0.7 



+0.1 



0.0 



+0.1 



+0.4 



+0.1 



+0.2 



+0-3 



3.9.3,9 



Th 





0.0 



+0.3 



+0.4 



0.0 



+0.5 



+0.1 



— 0.1 



0.0 



0.0 



+0.2 



0.0 



+0.1 



e above results are not entitled to full confidence, either from insufficiency or irregularity of observation. 



Fran 



kford Arser 



lal, ne 



ar Philadelphia,' Penn. Lat. 40° 00'. Long. 75° 04' W. of G. 







Alt. 24 feet. Captain Mordecay, U. S. A. 1836 and 1837. i 



Mdn't 



—2.68 



—3.06 



—3-33 



-3.65 



—4.52 



—6.84 



—5-92 



—5.40 



-5.29 



—4.91 



—2.59 



— 2.10 



—4-23 



I 



— 3 



02 



—3-29 



—3-94 



— 4.21 



-5.85 



-7.67 



— 6.91 



—6 



05 



—5.92 



— 5-40 



—2.66 



— 3.02 



—4.84 



2 



— 3 



40 



-3-89 



—4-79 



—5.24 



—6.86 



-8.39 



—7.90 



—6 



84 



—6.86 



— 6.01 



—2.86 



-3-38 



—5-54 



3 



—4 



10 



—4.46 



-5-76 



—6.48 



—7.72 



—8. 82 



— S.62 



—7 



47 



-7-85 



—6.62 



—3-17 



—3-74 



—6.23 



4 



—4 



79 



—5.02 



-6.53 



—7.40 



—8.03 



—8.64 



—8.64 



—7 



56 



-8.39 



—7.04 



—3-40 



—4.05 



—6.62 



5 



—5 



20 



—5-54 



—6.64 



—7-45 



—7-74 



-7.56 



-7.65 



—6 



73 



—7-97 



—7.02 



-3-89 



—4.21 



—6.44 



6 



—5 



06 



—5-29 



—5.90 



-6.37 



—5.96 



—5-54 



-5-67 



—4 



97 



-6.39 



-6.35 



—3" 



—4-05 



-5-38 



7 



—4 



23 



—4.52 



—4.30 



—4.37 



—3-74 



-2.84 



—3.02 



— 2 



59 



-3-85 



—4-93 



—2.39 



—3-42 



-3-69 



8 



2 



75 



—2.99 



— 2.12 



—1. 91 



— 1.28 



+0.07 



—0.18 



— 



02 



—0.81 



—2.84 



— I-3I 



—2.18 



—1-53 



9 



O 



77 



—0.68 



+0.16 



+0-45 



+ 1.01 



+2.70 



+2.39 



+2 



25 



+ 2.16 



—0.27 



+0.05 



— 0.41 



+0.77 



lo 



+ 1 



40 



+ 1.62 



+2.25 



+ 2.36 



+2.90 



+4-75 



+4-41 \ +4 



01 



+4.64 



+2.54 



+ 1.58 



+ 1.71 



+ 2.86 



II 



+3 



47 



+3.98 



+3-96 



+3.80 



+4-43 



+6.17 



+ 5-94 



+ 5 



27 



+6.50 



+5-24 



+2.52 



+3-83 



+4-59 



Noon 



+5 



i8 



+ 5-85 



+5.22 



+5.00 



+5.29 



+ 7-13 



+7.11 



+6 



26 



+ 7.81 



+ 7-54 



+4-41 



+5-51 



+6.03 



I 



+6 



41 



+6.77 



+6.17 



+6.12 



+6.91 



+ 7.90 



+S.06 



+7 



II 



+8.69 



+9.11 



+5-36 



+6.46 



+ 7.09 



2 



+6 



80 



+7.16 



+6.77 



+ 7.18 



+ 7.92 



+8.48 



+8.71 



+7 



83 



+9.16 



+9.81 



+ 5-72 



+6.58 



+7.67 



3 



+6 



57 



+6.59 



+6.98 



+ 7-94 



+8.51 



+8.75 



+8.87 



+8 



12 



+9.05 



+9.50 



+5-40 



+5-72 



+7.67 



4 



+5 



59 



+5-49 



+6.64 



+7-99 



+8.33 



+8.44 



+8.26 



+7 



70 



+8.17 



+8.24 



+4.41 



+4-37 



+6.98 



5 



+4 



28 



+ 4.21 



+5-63 



+7,00 



+7.20 



+7.27 



+6-75 



+6 



32 



+6.39 



+6.19 



+3-42 



+2.77 



+5-63 



6 



+ 2 



57 



+2.50 



+4.01 



+5.02 



+ 5.20 



+ 5-24 



+4.50 



+4 



12 



+3-87 



+3-71 



+ 1.26 



+ 1.24 



+3.60 



7 



+o 



83 



+ 1.04 



+ 2.07 



+2.45 



+2.68 



+2.61 



+ 1.87 



+ 1 



5' 



+ 1.0S 



+ 1.22 



— 0.32 



— 0.02 



+ 1.42 



8 



— 



65 



—0.27 



+0.14 



— 0.05 



+0.23 



—0.16 



— 0.63 



— 



97 



—1.49 



-0.97 



—1-55 



—0.9s 



— 0.61 



1 9 



— I 



71 



-1.48 



—1-37 



—1. 91 



—1,80 



—2.63 



-2.63 



— 2 



90 



—3-35 



—2.63 



—2.30 



— 1.60 



— 2.21 



1 lO 



— 2 



30 



— 2.09 



—2.36 



—2.97 



—3.22 



—4.55 



—4-03 



—4 



14 



—4.41 



—3-74 



—2.59 



— 2.03 



—3.20 



" 



—2.54 



—2.66 



—2.95 



-3-38 



— 4.16 



-5.S7 



—5.04 



-4.84 



—4.91 



—4.41 



—2.05 



—2.39 



-3-76 



Comb's 





























lO, lO 



—0.45 



—0.25 



— 0.07 



— 0.29 



— 0.16 



+0. II 



+0.18 



— 0.07 



+0. II 



— 0-59 



—0.52 



— 0.16 



—0.18 



6, 2, 9 



+0.01 



+"•13 



—0.17 



— 0-37 



+0.05 l+o.io 



+0.14 



— 0.0 1 



— 0.19 



+0.28 



+0.10 



+0-3I 



+0.03 



6, 2, 10 



—0.18 



—0.07 



— 0.50 



—0.72 



—0.42 —0.54 



—0-33 



—0.43 



—0.55 



—0.09 



+0.01 



+0.17 



—0.30 



7,2,9 



+0.29 



+0-39 



+0.37 



+0.30 



+0.79 +1.00 



+ 1.02 



+0.7S 



+0.65 



+0-75 



+0-34 



+0.52 



+0-59 



7. 2, 9 bis 



0.21 



— o.oS 



— 0.07 



—0.25 



+o.id +0.09 



+0.1 1 



—0.14 



—0-35 



— 0.09 



— 0.32 — o.oi 1 O.III 



3,9,3.9 



These four hour 



5 appear 



to have been employed for the daily means, the results of the combmation being zero. 



' Fror 



n Prof. A. Guy 



ot's Me 



eorological and Physical Tables, Smithsonian Misc. Coll.; Washington, 185S. 



Table by 



Dove. 







