f 



An attempt to ascertain the mean temperature by twenty.fom- observations in the day, and tlie thfee Iiours in the dny ^^llhh ^^iU give nearly the mean temperature 



laia 



Mar. 25 





£4 



it 



26 



27 

 28 

 29 



Xll. 



Mean 



25 



34.33 



39.75 



33.75 

 32.8^ 



1. 



'^O 





16 

 26.50 

 33.23 



39.67 

 33.50 

 6, 



32 



u. 



111. 



IV. 



i 

 1 



V. 



Vi. 



b 



29.50 



29.501 29.75 



33.50 



1 



33.50 



31 



32 



33.50 36 



38.25 



32.7S' 31.75 



30 



30 



30.25 



3i^.25 



39.16 39.50 



40.5C 



.42.67 



32.67 



31 



30.75 



30 



30 



33.03 



32.68 



3270 



34 



34.93 



Vll. 



33.25 



Mean of ^ A. M, aud 3 P. M. 

 " 9 P.M. 



43.37 

 33.28 



X. 



Xi. Xll. 



38.73 



38.66 

 51.50 

 53.251 59.50 



56 



40 



61 



11. 



ill. 



38.3 

 64 



oo 



47.50 

 28 



43.78 



48.50 



27 

 45.95 



Mean &t 12 aud 12 = 



= 39,74 



*♦ 1 ** 1 = 



= 40.40 



** » «« 2r 



= 41,08 



'« « « 3z 



= 40.73 



« 6 *« C- 



= 38^9 



39.75 





IV. 



I 



V. 



\\. 



'^9 



55.66 63.66 



49.66 47 



27.25 28 



46.71 48.20f 49 



65 



45.67 

 29.25 



9.50 

 63.751 60.75 



/ \n. 





44 



30.67 

 48,78 



63.25 

 43 



37 

 59 

 59 

 41.07 



31.20 30.25 



34 



54.66 

 9.66 



3 



'^0 



47 

 51 

 37 



vm. 



20.20 



45 



48.75 

 36.33 



IX. 



X. 



XI. 



24observ, observ. 



24.50 23.50 24 

 4i.66 38.33 57 



33,3S| 3i!.50 



44 



41.66 



35.50 34.67 



47.44 



45.38 



Mean at 6 A. M. aud 2 and Q I*. M. 



H 

 (1 



C< 



M 

 it 



April 



it 



ti 



Mean 



6 



6 

 6 

 8 



7 



u 



t4 



I 



X 



1 



3 



1 



O 



s 



4 



42.75 



45.50 



27.33 



25.25 



40 



36.16 



43.33| 44.251 45.50 



42.20 40.30 





43.33 



25.67 



28 



39.50 



35.97 



48.161 47.84 



23.25 



27 



40.67 



35.47 



22. " ■'' 





an 



Q5.75 



^^8.83 



34.64 



40.40 



22,25 

 26 



36.80 



34.72 





37.25 

 22.75 



27 

 6 



34.17 





"8 



49.84 5lM 



37.25 

 22 



27.75 

 33 



Meau of 7 A. M. and 2 P. M. 

 « 9 P.M. 



43.86 

 40.52 





"^9 



97 



27 

 31 



38.67 



37.27 



53.20 

 40.25 



28 



37 



43.33 



40.35 



53.S3 



Oi 



35 



29.25 

 42 



48.67 

 42. 1 2 



55 

 32 



31.67 



46.75 



50 



4108 



10 

 9 

 10 

 10 

 10 





3^.14 

 38.61 

 33.80 



39.75 

 40.12 



3D. 7 5 

 34 



797.48 

 i0y5.3jj 45.64 

 1111.2^ 46.30) 48.4£| 48.50J 37 



31.7.; 

 45.50 



li.Ui^e 



16.5 



"9 





1009.91 42.08 



27.25 24.50 22.50 20.75 19.66 19.84 | 672.29 

 41.6. 37.90 35.75 33.28 31.56 30.9. 



43.06 



39.05 



28.01 27.08 26.71 14 



41.85 15.6 



55.i^5 



'^3 

 ^"5 



49 



62,50 

 46.5i 



53 



"2 



801 54.20 55 



35.50 



35.751 37.75 



55 



54 



35.671 36.331 36.25 



52 

 64 

 47.51 





54.16 

 66.33 



49.59 



40 

 56 



^ -« 



65 



42 

 57 



62 



4^.25 

 57.25 

 60 



50.531 5i).4G| 49.95 



Wtan at 12 and 12 

 u 1 « I 



« - 8 « 2 



« 3 « 3 



« 6 » 6 



: 41.83 



42.78 

 43.00 

 42.50 

 40.23 





53.80 

 34.75 

 41.67 

 56 



56.50 

 48.54 



Mean III 7 A. M. and I and 9 1', M. 



" 7 »• i 10 " 



«♦ 8 " t 9 « 



" 8 « Boon and " 

 ** 8 « ** 10 '. 



: 39.30 



40.12 

 40.32 

 39.82 

 3».25 





39.05 



40.01 38.86 



54,33, 53.75 



July 231 65.831 65.25 



" 24 64 



<^ 25 



*•' 26 



<* 27 



Mean 



58.70 

 50.53 

 55.10 



61.75 



58.25 

 49.50 

 54 



58.791 57.5:^ 



63.50 



59 



56.20 



47.25 



53.10 



55.81 



62.80 

 58.50 



55.80 

 46 



62.16 



57 



54,50 



44.66 



53.17 52.80 



55.25 



62 



58 



54.75 



44.40 



53.17 



54.22 54.46 



Mean of 7 A. M, and 2 P. M. 

 « at 9 P. M. 



67.51 

 60,91 



64 



59 



54.33 



43 

 53.50 



67.50 



61.67 

 5 a. 90 

 53 

 57 

 55.77 1 59.01 





Mean at 6 A. 



iM. 



aud 2 and 9 P. M. = 



== 4 1.67 





" 6 



M 



2 



10 « 



= 41,46 





« 6 



cc 



1 



9 « : 



= 41.36 





«• 6 



iC 



I 



10 '' : 



= 41.15 





** 8 



u 



1 



10 ** : 



= 43^7 





ic 7 



ii 



2 



10 " 



= 42.56 



7i 



74.501 76 



68.25 70.s,0f 74.20 

 59.601 62.80 61.20 



61.50 62.30 



58 

 60.23f 64 





63.42 



66 



66.60 67,.94 



80.56 

 73.80 

 64 



66.80 

 66 



32.66 



38 



52.75 



55.20 



46.59 



0.75 



53 



51.531 49.75 



29.67 28 





33 

 47 



27 

 44 



26.33 



54.20 53.50 

 43.74 41.43 



2G.25 

 42.67! 41.33 



47.ii5 



27.50 

 26 



38.84 



Wiau at 9 A. M. »jid 1 and 10 P. M. 

 ** 9 " noon and 10 •* 



" 8 " 1 6» « 



Mean of higlicM and lowest mpans 

 abuut suiiiisc and 



ii 



40.22 

 3y.72 

 43.08 

 40.13 



33,29 



54.33 

 40.5u; 



54.75 55 

 39.88 34.92 



1225.331 



854.64' 



730.50 



991.50 

 1208.78 



51.05 

 35.61 



30.44 

 41.31 



50.37 



52.661 49 



34.2wi 

 31.08 

 43.22 



36.35 

 32.12 

 41.21 



) 



12.5 

 17 







82 

 8 



i 



Mean at 12 aud 12 

 " 1 « 1 



" a « 2 



« 6 « 6 



65.83 

 65.83 

 65.91 

 65.82 



63.32 



66.50 

 68.66 

 69.25 



72.88 



// 



33 



83.801 85.45 



77.20 



68.60 



73 



75.80 

 76.01 



67.30 

 70.75 

 71.40 

 74.12 



74. 



78 



69.75 



74.25 



76 



74.4(}[ 74.07 



74 



77 

 70.80 



75.30 



73.25 



7^.20 



74.67 

 70 



74.50 



72 



73.27 



Mean ai 7 A. .M. and 1 aud B 1*, M. 

 »» 7 "■ J 10 ** 

 •» 8 " J 10 « 

 « 8 « 1 9 ** 



•* 8 " noon and 9 " 



« 8 .. M 10 «« 



52.66 49.6( 

 41.76| 4I.76[ 42.77 4I.C7 



£ 



32 



S3 



42.44 



4-...5 

 43.59 

 43,J» 

 42.79 

 42. 5S 



iM. ail at u A. M. and 1 ajid lo i>. m. 



* 9 " noon and lo « 

 " « » 1 6 « 



M«^n of Lij-'liptit and luHctt means 



*• tbout sunnieand siiiist't 



43.8<5 

 42.J8 

 45.51 

 42.97 

 40.00 



7o 



71 



■ . V 



70.66 

 66.50 



I 



69.40 65.75 

 72.75 68.50 



Mean at 6 A. M. and 2 aud 9 P. M. 

 « 6 " a 10 " 



*» 6 " 1 9 « 



« 6 " 1 10 « 

 « 8 « 1 10 " 



« 7 «« 2 10 « 



64. 



63.59 



63.60 



62.96 



65.51 



64.67 



68.25 

 70.88 



68. 



67.*88 



68 



62.75 



61.25 



65.60 



60 15 



63.55 



61 



56.80 

 61.50 

 59 



65 



59.50 

 52.50 

 59.07 



58.25 



60.91! 5H.98 



63.L.0 

 59 



52 



50.67 

 59.50 

 58.16 



1696 Ibj 70.671 73.07) 73.721 23.4 





1607.52 66.97 06.62' 67.50 21 



Oct. 



a 



it 



€t 



Nov. 



Mean 



28 



32.80 



31.10 



30.75 



1 



29.75 



30 



29 



3'.75 



38.50 



39.50 



39.40 



38.50 



SO 



46.1(> 



45.33 



41.50 



40.66 



41.83 



31 



53.70 



52.50 



53.20 



54 



53 



1 36.40 



37.30 



38 38.80 



39.50 





41. 3f^ 



40.95 



40.59 



40.52 



40.56 



29 

 38 



42.50 

 52.20 

 40.20 

 40.38 



28 



27.80 



30.70 



36 . 



40.40 



47.75 



51.80 



52.60 



i 55.50 



53.20 



52.84 



37 37.16 



40 



46.40| 52 1 58 | 60.30 



61.83J 63 



64.20 



00.16 



45 45.75 



49.30 



56.40 



59 



62 ■ 63.60 



62.60 



65 



60.20 



59 



51.30 51.84 



53.80 



58 



59.50 



63,50 



62.84 



65 



67 



66 57.50 



40 



39.50 



41 



43.84 



45.^20 



46,20 



49.75 



51.16 



30 49.80 



47.40 



40.26 



40.41 



42.96 



48.13 



5I'.2ii 



55.49 



57.6' 



58.64 



5S».70 



58.68 



55.3H 



Mtuu of 7 A. M. and 2 P. M. 

 •• 9 P.M. 



50»0S 

 45.98 



1817 



Mean at 



and IZ 



1 ♦* 1 



2 « 2 



3 « 3 

 6 « 6 



49,51 

 49.79 

 50 14 

 49,60 

 44.84 



48.00 

 56.U- 



58 



49.60 



45 



51.47 



Wean at 7 A- M. and 1 and y P. M. 

 ** 7 ^' 1 10 «« 



« 9 « I 10 « 



** 8 " noon and 9 " 



** g « « 10 u 



64ifiA 



64,04 

 e6,07 

 66,07 

 6J.74 

 65.51 



46 



53.40 

 57.50 

 46 



44.25 



49.43 



38. 



49 

 56. 1 6 



37.50 

 44 



45,09 



1466.6b 

 1452.; 9 



1498.94 



64.3.'> 



60.43 61.46 18.8 

 62.50 59.85 50.9 



61.11 



60.54 

 62.40 

 64.351 65.5 1 1 G5.37 



63.93! 64 



2S.2 



Mwu' ai9 A. M. and 1 audio P, M. 

 " 9 " noon and 10 •• 



" 8 " I « « 



^Scau ui )iip:he(t and lowvit mewB* 

 " about lunruc aud sunwt 



66.57 



65.91 



06,47 

 4Si.Il 



66.17 



Mean at 6 A. M. and 2 and 9 P. M. 



.« 

 « 



6 

 6 

 6 

 8 

 7 



M 



W 



W 



M 



t( 



2 

 1 



1 

 1 

 2 



10 

 9 



10 

 10 

 10 



u 



u 



48,65 

 48,61 



48.29 

 48.26 

 49.16 

 49.33 



Mean at 7 A, >1. and l a^d 9 P, M. 



Jan. 



6] 24.201 24 



24 



« 13 6 



14 

 15 



16 



17 



23 

 31 



Feb. 5 



«' 6 



Mean 



ti 



if 



ti 



it 



1 3.50 



8 

 23.8 



4.25 4 



22.6 

 -1 



5.50 

 -3 

 -11.5 



8.81 



10.25 



9 



24 



10 



9 



23.2 



24.20 24.40 24.50 25 



26 



5.10 

 12.25 



9.80 





22.6 22.3 



-2 



6.70 

 -4.60 

 10 



8.42| 



■2 



7 

 6.30 



8 



8.32 





23 

 22 

 -2.50 



7.60 

 -7.70 

 -4.50 



8.92 



5.7i 

 i3 

 10 



22 

 21.60 



''.2(i 



S.U) 

 9.40 

 3 

 8.92 



6 



6.10 6.30 



9.50 .6 

 10.601 11.50 



22 



19 



3.80 

 8.90 



11 



1.10 



8.46 



Mean at 7 A. M. and 2 P. I 

 « 9 P.M. 



15.23 

 16.16 



22 



18 



-5 



9.66 



12.60! 

 1.2t 



8.iy 



85 

 12 



22 



16 



-4.60 



10.10 

 14.33 

 3 



8.03 



27 



'7.20 

 3 



28.50 

 9.70 

 5 



31.50 



1" 



7,50 



13.501 16.20J 20.50 



22 22.90| 24.30 



18 22.50 



-3.75 ^ 

 12.20 

 11.50 



5.20| 8.80 



9.28 12.47 



35 

 19 

 10.17 



24.20 



36.80 



19.60 



38.101 39.80 

 21.50 22 



12.30 13 



13.50 



25.25 26.20 26 



26.60 26.90 26.70 



29 



7.30 

 16.60! 18.50 



7.50 



5 



i 



12.^0 

 15.94 



30 

 11.40 



22.10 

 -4 

 20 

 1 9.4 5 



29.60 

 15 



23.33 



-2 



30 



17 



24 

 



24.60 26 

 21.14 22.25 



27 



29.50 



15.80 



26 



-0.70 



26.50 



22.54 



"9.40' 



38.30 



20.10 18 



13.20 

 26.25 

 26 



"0 



14.40 



19.50 

 -I 



25 

 21.2 



11.40 

 26 



a 



29.60 

 13.40 

 16.80 

 -I.IC 

 24.20 

 20. 1 r- 



38 



16.50 



f 



9 



22.30 

 23.7o 

 29.20 

 12.50 

 14.50 



-3.3§ 

 23.20 

 18.56 



44 

 It 



ii 



7 

 8 

 8 

 S 

 8 





1 

 1 



10 



10 



9 



*♦ nonn and 9 



«« 



w 



10 



w 



4« 



43.01 

 44.Q3 

 41J.61 



49.16 

 48.87 



48.33 



\}5^Z.5y\ ii[}.(i^ 



i 171.32 

 b282.05 

 127K93 

 1045.30 



48.81 



40.77i 41.05 27.7 

 49.89 



53,42 54,98 



53 



43.55 



47.69 47.69 



53.11 

 44.73 



50.60 

 52.1 



52.25 

 43,78 



27,5 



29.5 

 14.7 



48.69 48.08 



l6 

 6 



50 



60 



.30 



ilean at 12 aud 12 

 « 1 « 1 



*« 2 » 2 



" 3 « 3 



« 6 « 6 



14.97 

 15.J3 

 15.43 

 15,10 

 13,15 



4 





Mean at 6 A. M. and 2 and 9 P. M, 

 «♦ 6 " 2 10 " 



M « « 1 10 « 



u 8 « 1 10 « ' 



tt 7 « 2 10 « 



15,63 

 15.66 

 15 53 

 15.53 

 15.fi3 

 15.61 



22,20 



23 



30.60 



19 



11.20 

 ^6.50 



20.20 



18.1 * 





^^.83 



23 

 23 



38.501 38.80 

 16.20 16 

 4.50 

 22.60 

 23 



33.50 

 19 



9.67 

 -8.G0-10 



16.33 12.40 



17 47 16.94 



38.60 



16 



38.80 

 15.70 



4.66 6.70 



24 



39 



15 • 



7.50 

 24.20 



Mt-au at 9 A. M. and 1 and 10 P. JH. 



" 9 " noon aud 10 " 



« 8 « 1 6. » 



»«'an of his^hest and lowest m«mi 

 '* about iunrue and sunset 



50.88 

 50.56 

 50.33 

 49.98 

 45.94 



32.80| 31.1(1 



20 



18.10 



9.601 8.60 

 -11,25 



9 



16.16 



26 



22.801 22.60 



32 

 18 

 5.50 

 -12.6; 



7 

 16.81 



31 

 IS 



8.20 

 11.50 



7 

 16.27 



Memi at 7 \. M, ana 1 aud 9 P. M, 



it 

 « 



7 

 8 

 8 

 3 

 8 





1 



3 



1 



10 



10 



9 



*' noon .■»nd 9 



a 



a 



10 



it 

 w 



CI 



u 



15.48 

 15.52 

 16.03 

 15.89 

 15.53 

 15.56 







780.90 



505.60 

 210 

 448.30 

 570.38 

 632.50 

 193.05 

 309.86 

 -165.58 

 234.13 

 1 4 ,66 



32. d4 



12.73 

 8.75 

 18.68 

 23.76 

 26.35 

 8.04 



12.91 



-6.89 



9.76 



14.66 



34.80 31.901 14.8 



14.77 



7.34 



20 

 23 



IS 



8.25 

 17.62 



06 



94 j 24.50 

 25.53 24 40 



9.77 

 14.90 

 -8.76 



1 2.8.' 



7.50 



15.75 



-7.16 



7.50 

 15.5fi| 14.35 



f; 



18 

 10.5 



17.25; 



5 



16.8 



22 



20.5 

 14. ''^ 



oo 



"-8 



Mean at 9 A. >l. and 1 and 10 P. -M, 



♦' 9 « noon and 10 « 



« 8 « 1 6 '• 



Mean of hig-hest and lowest means 

 abuut sumise aa-i sunset 





= 1 



: 35»i'^ 

 I4.CI 



r 



The mean of nine P. M. is much nearer the mean of 





M 



tt 



it 



it 



tt 



A. M. and 2 and 9 P. M. 

 highest and lowest 



2 P. M. in winter than in summer- This is doubtless the reason thattlie Mean of 24 observations 

 mean of the 24 obscrvati<ms so nearly coincides with that of 7 A. M. 

 and 2 and 9 P* M. at all seasons* Had the observations been more 

 frequent, the mean temperature would probably be foimd to be some- . 

 what nearer that of these three hoursji than it appears to be in this re- 

 sult. 



• 53 



Of the thirty Jays, the 



do. 



do. means 



8 and 1 and 6^ 



*^ about sunrise and sunset -: 



'41.50 



42.47 

 41.G6 



42.^9 

 45.00 



40.88 



Of the five successive days in January, the 

 Mean of 24 observations - - 



tt 



(t 



7 A. M. and 2 and 9 P. M. 



6 



i< 



2 



9 



it 



higlji;st and lowest 



Feb. 15, 17, 18, and 19, grave 



o5£ 



■^ - 



^r 



18.03 



10. 



C»£ 



■f 



B- 



5» 



« 



* Hours proposed by tlic PUilosophical Society of New York. 



L 



