METEOROLOGICAL OBSERVATORY 



Hatch Experiment Station 



MASSACHUSETTS AGRICULTURAL COLLEGE. 



j^is/l:e^:e:eist. 



Latitude. 42* 23' 48.5" N, Longitude 72* 31' 10" W. 



Height of barometer above ground, ^i ft. Above sea level, 2IJ.5 ft. 

 Height of Wind Instrmnents 72 ft. 



BULLETIN No. 190. 



OCTOBER, 1904. 



MONTHLY SUMMARY. 



Frenaiire. In inches. 

 Maxiinuni reduced to freezing, 30.20.7th, S A- 

 Minimum reduced to freezing;, 28.99, 21st, z p. 

 Reducedt maximum readinji;, 30.51, 7th, 8 a. 

 I<educed+ minimum reading, 29.28, 21st, 2 i'. 



Mean semi-daily reduced 30.075 



Montlily range 1.23 



*Aii' Teinperntttre. In Degrees Fahr. 



Highest, 77-5, 17th, 3:3° P- 



Lowest 18.0. 31st, 7 A. 



.Mean hourly, 47-2 



Mean of means of max. and min., .... 46.0 



Mean sensible (wet bulb), 41.9 



Montlily range 59-5 



Highest mean daily, 60.8, nth 



Lowest mean daily 32-7i 2Sth 



Mean maximum, 58.1 



Mean minimum 33-9 



Mean daily range 24.2 



Greatest daily range, 49-o, 17th 



Least daily range ■ 9.o,9tli 



Hii tnUlitif. 



Mean dew point 37.5 



Mean force of vapor, . . 320 



Mean relative humidity, 740 



Precipitiitioii. In inches. 



Total precipitation, i.74 



Number of days on which .01 inch or more | 



rain or melted snow fell '1 



* Temperature in ground shelter, 

 t Reduced to freezing and sea-level. 



Wind. 



Total movement, 4160 ni. 



Greatest daily movement, . . . 340 m., 21st 



Least daily movement, 3111., 17th 



Mean daily movement 134. 2ni. 



Mean hourly velocity, 5.6m. 



Maximum pressure per square foot, 25.5 lbs.= 



69m. per hour, 21st, 12 M., S.S.E. 

 Prevailing Direction, Southwest. 



Summary. 



South, 29 per cent. 



North, Northwest, 16 " 



West, 13 " 



West, Southwest, 10 " " 



Other directions, 32 " " 



Weather. 



Mean cloudiness observed, .... 42 per cent. 

 Total cloudiness recorded by the Sun Ther- 

 mometer, . . . . 158 hrs. =46 per cent. 



Numter of clear days, 13 



Number of fair days, 9 



Number of cloudy days, 9 



Tiright Sitnshine. 



Number of hours recorded, . . . 183 hrs. = 54* 

 Iffiin, 1st, 5th, 6th, 8th, loth, nth, 12th. 13th. 



14th, 20th, 2ISt. 26th. 



fJnleti, 35 miles or more per hour. 47m. ist, 

 W.: 36m. nth.S.S.E. : 69m. 21st, S.S.E. : 

 48111. 30th, N.N.W. 



Hail, i2th. 



ri-o.tt,yth, 14th. i^th, 23d. 24th, 27th, 28th. 31st. 



Snotr, i2th. 



