^ 



XX til. 



Observations made with Fahrenheit s thermometer, at Salem, Mass. from the year 



*■■ the year 1818, both inclusive, being the last 2i6 years of a period of 



1793 



y^ars observations, the first series of seven years of which was published 

 the Memoirs of the American Academy, in the year 1793. 



By EDWARD AUGUSTUS HOLYOKE, M. D. 



PRESIDENT OF THE AMERICAN ACADEMY OF ARTS AKD SCIENCES. 



Computed by Elisha Clapy F. A. A and cmnmunicated by Lev 



Logick and Mdaphtjsicks in Uarcard L 



Professor of 



1793. 



Second Series, 



to. 

 ■§.2 



S 



SS! 



C en 

 *- o 



so 



If 



Mth. 



Jan. 

 Feb. 

 M ar 

 April 



May 



June 

 July 

 Aug. 



8 A. M. 



25.16 

 26.75 (33.67 



Noon 

 2.38 



:> 



) 



6.03 

 49.66 

 62.96 



n.7 



44.58 

 56.86 



71.32 

 80.03 



74.36 80.83 



71.45 



Sept. 62.16 



Oct. 47.87 



''8.5 



Nov. 



Dec. [27.54 



80.03 

 71 



25.38 27.93 



Sunset.! 10 P M.J Meun. 



28.8 



30.42 



39.12 



48.65 



60.55 



:0.03 



26.78 

 34.93 

 43.57 

 55.55 





29.405 

 38.66 

 49.685 

 62.595 



65.36 71.78 



72.51 67.33 



71.76 

 63.62 



57.96 51.9 



44.13 40.73 



35.2 \3i.66 



66 



58.72 

 46.51 

 "7.03 

 27.08 



.Vleanl49.511 57.332(50.812 46.186 



73.757 

 72.51 



63.875 



51.06 



40.097 

 30.37 ' 

 50.96 



a> s 



5 00 > 



^ c c 



* C 4J 



c 2 o 



i Hottest 

 day. 

 d. O 

 1943 

 24 51 

 17 73 

 -^^.... 8 70 



V.ay 21 95 



June 30 957 



July 5 964 



Aug. 5 94 



1 87 



Oct. 10 77 



Nov. 6 61 



Dec. 8 43 



Coldest 



day. 

 d. 



31 2 

 1 1 



1 15 



22 35 

 5 41 



2 49 

 13 60 



27 52 



18 43 



29 28 



19 23 

 26 n.5 



Greatest change 

 witliin24 hours. 



o 





4,27,28,31 23 



3 32 



Ranfi:e 

 of each 

 month 



41° 

 50 



Range of 

 seasons 

 md jear. 



% o t^ -r 



jp CO -y CJ — w 



18 35 58 



8 24 

 12 34 



7 28 



5 25.4 



6 26 

 19 27 !44 



35 

 54 

 46.7 

 36.4 



42 





o ^ 



O o O O 



♦* J3 ^ ^ 



o 



»-• 10 Ov 



10 OV M 



r-i -^ « 



• o 



O « OJ 



« 05 S 



Thermometer at tiO*^ 

 and upwards 



May 



June 

 H July 



7 clays 



17 

 17 



August 14 

 Septera. 6 



ThcriTiometcr at 90° 

 and upwards 



May 1 day 



June 7 



July 3 



August 2 



61 



15 



Hottest day Ju- 

 ly 5, 96M. 



Thermometer at 32^ 

 and under 



January 26 days 



Thermometer at 0^ 

 and under 



Feb. 



22 



March 14 



October 4 

 Novem. 12 

 Decern. 28 



day. 



Coldest tlay De- 

 cember 26, 0°.5. 



106 



1 



Whiter. Spring. Summer- Autumn. Season?. 



Mean of 127.928 i 50,313l 72.615 ! 5L677 I 50.C33I 



M 



ta 



16 35 

 12 21 



26 33 



49 



"8 



C3.- t- S ti 



. 



42,; 



F 



a 



SI 



O 



5 



£ 



