BULLETIN No. 3. 



MARCH, 1889. 



METEOROLOGICAL OBSERVATORY 



Ol' TIIK 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



Latitude, 42° 23' 48. .V N. Longitude, 72° :)\' 10" VV. 



Height of instriimemts above grotind, 51 ft. Above sea level, 260 ft. 



Pressure, In inches. Aftual inaxiniiini rcaiUnj,' 30..'U0; Arcan rciliiccd to 32^ F., '29.533; 

 Monthly Range, 1.007. 



Air Teinpernture. In Degrees Falirenheit. Mean, 37. O*-"; Highest, (il.O'^'; Lowest, '23.0"; 

 Mouthlj- Range, 3S.0«; Highest Mean Daily, .51.3-^; Lowest Mean Daily, 29.2^' ; Mean Maxi- 

 mum, 43.4"^; Mean Minimum, 32.3-'; Mean D;iily Range, 1.5..')'^; Greatest Daily Range, 30.0*. 



Hmnidit!/. Mean Dew Point, 30.4; ^lean Relative Humidity, ".t.O. 



Wind. Prevailing Direction, X. E.; Total .Arovemeut, 7063 miles; Greatest Daily Move- 

 ment, 520 miles, 21st; Least Daily Movement, 13 miles, 2d; .Mean Daily Movement, 228 

 miles. Mean Hourly Velocity, 0.5 miles; Maximum Pressure per .Square Foot, 16 3-4 lbs. 



PrecipHation. In inches. Total Precipitation, 1.43; Total Depth of Snow, 4 1-2; Depth 

 of uumelted Snow on Ground at end of month, 3. 



Bright Sunshine. Number of Hours Recorded, li8; Maximum Tcmperatui'e in Fahr- 

 enheit Degrees, 147'^. 



Weather. Mean Cloudiness, on a .Scale of 10, 0.3; Number of Clear Days, 8.0; Number 

 of Cloudy Days, 16.0; Total Cloudiness recorded by the Sun Thermometer, 228 hrs. 



HOURLY P.EADINGS FROM THE 



DRAPER 8ELF-REC0RDINC} THERMOMETER. 



IN THE SHADE. 



Mar. 



1 

 2 

 3 



4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 81 



12 



26 

 2929 

 42 42 

 40 40 

 37 30 

 37 37 

 37 37 

 3131 

 i8 28 



3 4 5 6 



25 24 23 23 23 24 



28 27 26 •J(i'2G 2G 

 42 41 4! 40 40 :!'.! 

 40 39 38 :'.>.'.■.) 4(1 

 37 37 37 37;:: 37 

 37.37 37:;^:;7:;> 

 37*37 37 3(;:i(; :;7 

 30 30 2!' ■-•'.I •:;> :;'i 



9 10 11 12 1 



8 9 10 11 12 Mean 



;I:30 34 38 41 41 43 43 44 43 40 .38 35 33 32 

 3';!3S 42 43 47 47 47 45 44 44 44 '42^42 42 

 42' I:; 4."i \r, 17 :i(l',')(l J.S 4(; 45 45 44'43'42 



!l 12 v.) !:. v; ii; 45 -15 i<'A:\ 4:; 42|39'3S 

 :',s :;'.i .■;'.i 4(1 III Hi ti 4(1 4(1 4(i 40 :;!) 39'3S 

 :!> :;'.( lo;;:! Id ii m Ki -in .-'.s :;s i;; ;!7 :;: 

 ;!7 :> :;;i:;7 37 :;7 :!(; :;4 :;:; :;2:;i 31 32 :\-l 



G 21) 25 

 :30 29 29 28 27 

 29 30 pm .30 3() 

 ;iG ;^5 33 ;32 32 

 43 38 37 33 31 

 9 2s 2S -js -^7 



31) .>(! 32 

 31 31 3:'. 



37, 41 

 ;41 4." 



i4'.)5l 



:;7-)(i 

 |i;47' 



40 3'J|3s : 

 ;56 36 35 : 

 4i:40 38: 

 3737i3(;: 



4(1 42 

 i:; 15 



14 4i; 



47 4s 

 37 3- 

 )il II 

 :j(i5i 



I 1(1 111 

 II 11 



i4s 47 



47 47 

 ; Is is 



44 44,44 44 42 41 42 4.'. 

 44 44:43 43 44 Ul 4(»41 



27 20 24 22 22' 

 35 35'34 34 34 

 48 47147 47 47 



33 32|32 3] 31 



34 i 32 31 29 1 28 

 25 j 25 125 24! 23 



4G,4G 4( 

 31 31 3: 



I:'. 41 

 37 4(1 

 47 47 

 37 30 

 40 48 

 .32:54 

 32 33 



i;i i;i 



44 13 



5l|.52 



.50 50 

 3536 

 34 34 



:\: 311 :'.(! 3(1 :'.(' ;i(i :'.ii 30 

 :;i; 3-1 33 32 31 3i):;(i^;!i 

 43 42 II II ,l(i3'i:;s:;7 



57 55 54 5:, 51 |S-|:, U 



4(13;! 37 :;-! 3:; ::i 31 29 

 4(1 :'.'.i 3s ;!7 :;(; :;(; :;5'35 

 10 4i; 45 44 14 14 -13, 12 

 3s :;s :17 37 30 3G 30 M 

 4'-. -1545 44 43 42 42 41 

 47 4.'.|43 4Mi;4(i.30 38 



-42 42 42 41 41 4(1 40 39 

 54 51 49 45 43 43 42 41 

 .-.7 .54 51 .5(1 48 '47 45 42 

 CI 5s 57 .5(; 54 .50 47 46 

 41 311 3(133 32 31 2s 27 

 40 4(; 42 3;i3s'3(;35 35 

 51 .".(1 49 49 49!49.|9 49 

 !4 3.3 33 



49,47 47 40,46 ;38 

 35 32 30|29 28|28 

 .34 1341 33; 33 1 33 1. 33 



36 35 

 27 26 

 331331 



32.8 

 37.2 

 43.4 

 41.4 

 38.4 

 38.2 

 35.3 

 29.2 

 29.5 

 30.0 

 31.5 

 37.2 

 44.5 

 34.8 

 34.1 

 41.9 

 38.2 

 41.0 

 41.7 

 36.8 

 39.1 

 44.1 

 46.2 

 51.3 

 39.7 

 34.3 

 43.7 

 40.5 

 40.2 

 30.4 

 29.9 



