Meteorology, 317 



Meteorological Olservations kept at WalthamstoWy Essex, from 

 March 13 lo April 15, 1817. 



[Usually between the Hours of Seven and Nine A.M.] 

 Date. Therm. Barom. Wind. 

 March 



13 48 29-90 W.— Cloudy; gray day; bright star-light; 



aurora horealis N. and NE. changing form 

 and place ; stars seen through at 11 P.M. ; 

 very bright N ; at 1 1 1 very dark, and neither 

 stars nor aurora horealis visible. 



14 44 30"22 Sunshine; very fine warm day; bright star- 



light. 



15 42 30-32 N.NW.— White frost early; hazy; sun through 



fog; at 9 dark night at 11 P.M. bright 

 star-hght. 



16 35 30*22 N. — Hazy; clear and clouds ; cumulostratus, 

 fine day; star-light. 



30-22 NE.E. — Foggy ; very fine warm day; star- 

 light. New moon. 



30-23 NE.W. — Hazy and sun; fine sunny day; star- 

 light. 



29-91 W. — Clouds and wind; cold day; sunshine 

 P.M.; star-hght; aurora horealis at 8|P.M. 



29-70 W. — Sun and wind; fine cold day; slight 

 showers ; bright star-light ; at 9 P.M. auraia 

 horealis NW. 



21 27 29S8 W. — Snowing and sun ; sunshine and windy; 



star and moon light. 



22 22 29-90 NS.— White frost and sun; fine day; wind 



abated; clear star- and moon-light. 



23 29 30-00 SE.— White frost, and sun and hazy ; very firfe 



day; cloudy. 



24 42 29-89 SW. — Cloudy; cj/mw/i; some drops of lain; 



fine day, but clouds ; cloudy. 



25 45 29-75 W.NW. — Hazy ; and slight rain ; sun through 



clouds; showers and sun ; cirrostratus; fine 

 orange sun-set ; star- and moon-light. 



26 4f) 29-93 SW.S. — Hazy and windy; hazy all day; rainy 



after 4 P.M.; showers and wind; cirro- 

 slratus ; moon and some stars. First quarter. 



27 38 30-00 NW. — Sun, and cirrostratus and cumuli; very 



fine day ; windy; perfectly calm; moon- and 

 star-light. 



28 38 3000 S. — Hazy; rain; showery afternoon; hazy 



and moon-light. 



Mardi 



