METEOROLOGY. 



815 



trical storms of California, by A.J. Barwick; and notes by the editor 

 on mechanical determination of resultant wind, the meteorological 

 stations of Harvard University, meteorology in the United States 

 Geological Survey, recent earthquakes, electric storms at Sacramento, 

 distant cloud banks, cloudy condensation, cycles in meteorology, water 

 measurements for irrigation, and chinooks in Iowa. 



Meteorology of 1896, W. S. Sweetser {Pennsylvania Sta. Rpt. 

 1896, pp. 225-229, 238-246, 251-273).— "The work of the past year has 

 been merely a continuation of the work of the preceding years [E. S. R., 

 8, p. 754], including the observations usually called for by the United 

 States Weather Bureau upon atmospheric conditions, and also observa- 

 tions upon soil temperature at various depths [see p. 819] and upon the 

 daily duration of sunshine." The annual summary is as follows: 



Summary of meteorological observations, 1896. 



Barometer (inches) : 



Mean 



Highest 



Lowest 



Temperature (°F.) : 



Mean 



Highest 



Lowest 



Mean daily range 



Greatest daily range 



Least daily range 



Mean daily relative humidity (per cent) 



Rainfall (inches): 



Total 



Greatest monthly 



Greatest daily 



Number of days on which 0.01 in. or more of raiu fell 



Mean percentage of cloudiness 



Number of days on which cloudiness averaged 80 per cent or 

 more. 



Average hours of sunshine per day .• 



Wind (miles) : 



Total movement 



Maximum velocity 



Greatest daily movement 



Last frost in spring 



First frost in fall 



30.050 



:S0.861 (Dec. 29)... 

 28.948 (Feb. 6).... 



49.5 



93 (Aug. 9) 



6 (Feb. 17) 



17.7 



39 (May 9) 



i (Jan. 24, 25) 



81.8 



Growing season 



(Apr. -Sept., 



1896). 



64.2. 



93 (Aug. 9). 



21 (Apr. 3). 



19.5. 



39' (May 19). 



77.3. 



35.28 20. 



5.56 (July) 5.56 (July). 



2.40 (Sept. 30) 2.40 (Sept. 30). 



132 69. 



60.0 55.5. 



138 62. 



25,340 



28 ( Feb. 6) . . 

 435 (Mar. 2) 



4h.59 m. 



Apr. 23. 

 Sept. 24. 



Principal periods of crop development. 



Wheat: 



Seeded, September 1-6, 1895. 



la bloom, June 1, 1896. 



Ripening, June 12. 



Cut, July 3. 

 Corn : 



Planted, May 4. 



In silk, July 24. 



Cut, September 11. 



Husking begun, September 25. 

 Clover: 



In bloom, May 29. 



Cut, June 20. 



Oats: 



Seeded, April 15-24. 



Ripening, July 17. 



Cut, July 20-24. 

 Potatoes : 



Planted, May 15. 



Late varieties harvested 

 ber 25. 

 Grass : 



In bloom, June 5. 



Cut, June 26. 



Septem- 



