BULLETIN No. 23 1. 



MARCH, I908. 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



AGRICULTURAL EXPERIMENT 



STATION. 



Latitude, 42" 23' 48.5" N. Longitude 72" 31' 10" \V. 



Height of ha IOmeter aboi'e ground, ^i ft. Aboi'e sea level, 2jj.^ ft. 

 Height of IViiui Instruments 72 ft. 



MONTHLY SUMMARY. 



frenaare. In inches. 



Maxirmnn leduced to freezing, 30.27, 10th, S .\. 

 Mininium reduced to freezing, 29.07, 15th, 7 P. 

 Keducedl niaxiuunn reading, 30.59, 10th, 8 \. 

 Keducedt niininiiim reading, 29.37, ijth, 7 p 



Mean semi-daily reduced, 30.104 



Montiily range 1.22 



* Aiv Teiiiperutiire. In Degrees Falir. 



Highest 67.0, 27th, 1.30 P 



Lowest 5-0. ist, 6 a. 



Mean iiourly, 34-7 



Mean of means of max. and min 34.8 



Mean sensiljle (wet bullj), 31.2 



Montiily range 62.0 



Highest mean daily, 53.0,27th 



Lowest mean daily 19.0, ist 



Mean maximum 44.5 



.Mean mininuim 25.3 



Mean daily range, 19.2 



Greatest daily range 32.0, 26th 



[-east daily range, 6.5, 20th 



Hiitniditjf. 



Mean dew point 26.9 



Mean force of vapor, 205 



Mean relative humidity, 77.9 



Precipitation, in inches. 



Total precipitation 2. 86 



Number of days on which .01 incli or more 



rain or melted snow fell 13 



Total snow, in inches 4.5 



* Temperature in ground shelter. 

 f Keduced to freezing and sea-level. 



Wind. 



Total movement 5759m. 



Greatest daily movement, .... 421 m., 26th 



Least daily movement, 44m., 18th 



Mean daily movement, 1S6 m. 



Mean hourly velocity, 7-7 m 



Maximum pressure per square foot, lo.o ll)S.= 

 45 m. per liour, 15th, 3P., S. \V. 



Maximum velocity for 5 minutes, 2,2 m. per 



hour i6th, 4P., N. N. W. 

 Prevailing Direction, Northwest. 

 Suniniary. 



North, 13 per cent 



Southwest, 19 " " 



North Northeast • 10 " " 



Northwest 10 " " 



North Northwest 19 " '• 



Other directions, 29 " " 



Weather. 



Mean cloudiness observed, . • . .48 per cent. 



Total cloudiness recorded by the Sun 'I'her- 



niometer, . . . i5ihrs.=4i per cent. 



Numljer of clear days 13 



Number of fair days 9 



Number of cloudy days g 



Bright Sunahine, 

 Number of hours recorded. . . 220 l)rs. = 59« 



Rain, 2d, 6th, 7th, Sth. 15th. iSth. 19th. 23d. 



24th, 27th, 2Sth, 29th, ',ist. 

 Snoif, 1st, Sth, 17th, 18th. 



Sleet, 1 8th. 



Daiffi Sleighing , 4. 



Galea, 35 miles or more per hour.. 35 ni 

 7th. N.N.VV.; 35m.. loth, N. \V.: 45m., 

 15th, S.W.: 40 m., 24tli, N. N. \V.: 35 in., 

 26th, \V. S.W. 



Thunder and Lif/htning—i^th. 



