50 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Jf) 



and above Mean Sea Level before and after the change arc 

 given at the head of the rainfall table. 



The Beckley gage and the 8-inch check gage are in a railed oft' 

 enclosure about 40 m. to the north of the Observatory 

 buildings. 



The area of the Beckley gage funnel is 102.3 sq. in. The ground 

 on which the gages stand slopes generally downwards to- 

 wards the west-northwest at an inclination of about i in 20. 



The heights of the barometer, thermometers and rain gages are 

 given at the heads of the appropriate tables. 



DENMARK 



COPENHAGEN 

 Pressure. 



Hours of observation: 



1842 to August 1874 incl 



8^^, 12'', iG\ means ;K8''+ 12'^+ 16^) 



September 1874 to 1920 incl 



8'\ i4i\ 2i'\ means 4(8''+ i4^ + 2i^) 

 Height of barometer : 



1842-August 1874 incl Hb= 4-9 ni. 



September 1874-1906 incl Hb= 13.3 m. 



1907-1920 incl Hb= 5.0 m. 



Temperature. 



Site of instruments : 



1768-1817 " Rundetaarn " H ==43 m. 



1818-31/5 i860: Botanisk Have (Botanical 



Garden) 11 = 3.5 "i- 



1/6 1860-1920: Landl)()h0jsk()lcn (Agricultural 



High School) H = i3 m. 



Hours of observation: 



1768-1776: &\ 12'', 18'', 24''. 



1782-1817: variable hours of observation, 7'^ 12'', 21''; 

 7'', i4'\ 21''; 8'', i4'\ 22''; and 8^ i4'\ 23". 



.818-1823 incl.j''' -^'"'-'S ^f- "'='•: 5". '2\ 2'i" 

 liO Sept.-15 Apr.: sunrise, 12", 23". 



fjan.-Apr. incl. and Sept.-Dec. incl. : 7'', 

 1 824-3 1/5 i86o) 12^, 141^, 23'\ 



[May-Aug. incl.: 5'', 7^. 12'', 14'', 22,^'. 

 1/6 1860-1916 incl.: 8'\ I4'\ 22''. 

 1917-1920 incl. : 8'', 14'', 21''. 



