36 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 79 



tlie Stations by the inspectors of the Central Geophys. Observatory. These cor- 

 rections were applied to the data of Observations. 



In the enclosed tables of the data of pressure are reduced to °C, and the 

 Lat. of 45°. Beside that the data of all stations are reduced to the same alti- 

 tude. The mean diurnal pressure was deducted from observations made three 

 times a day; 7'' a. m., i*" p. m. and 9'' p. m. according to the formula 



7" + 13" + 21" 

 3 



The mean diurnal temperature was deducted from observations made at 

 7" a. m., i'' p. m., and 9'' p. m. according to the formula 



7" + 13" + 21" 



3 



All the monthly mean values were corrected according to the corrections 



quoted in the work of H. Wild " Temperatur-Verhaltnisse des Russischen 



Reiches " for the purpose of identifying them with the mean values of hourly 



observations 



(1" + 2^4, ... 4-24"). 

 24 

 The mean temperatures of all stations are reduced to the same * altitude, 

 the change of temperature with the height being admitted as being equal 

 to-o.6°C. for every 100 m. 



The data of pressure, temperature, and precipitation relating to the same 

 stations for the period 1916-1920 have not as yet been delivered to the Central 

 Geophys. Observatory. 



NOTES ON INDIVIDUAL STATIONS 

 IRKUTSK 



" The height 465.6 m. was adopted only temporarily in 1914 for 

 the time when the barometer was removed for several months 

 (Sept.-Dec.) from its permanent place into a temporary apartment. 

 After its instahnent into a new permanent place its height was deter- 

 mined as being equal to 467.0 m. This height has to be considered as 

 the true one since December 17, 1914. Up to 1914 its height was also 

 equal to 467.0. Monthly values from January 19 16 to Jwne 1924 have 

 been extracted from data sent from the Central Observatory, Lenin- 

 grad, to the Simla Metl. Office in June 1925." 



SYRIA 

 BEIRUT 



Height of barometer from start to date is said to have varied from 

 33.7 m. to 40 m. The data were reduced to the station level from the 

 sea level equivalents by applying a uniform correction of —3.0 mm. 

 Temperature data are the ineans of three daily readings taken at 8J'', 

 14^'^ and 20V' standard time of 30th E. meridian. 



*This is the altitude at the top of tlic table: it is not the same for all 

 stations. [Editor.] 



