24 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 79 



Exposure: Prior to 191 1, the thermometers were exposed in a 

 small sized Stevenson screen. After that date they 

 were exposed under a thatched shelter in accor- 

 dance with former Meteorological Office recom- 

 mendations for use in the tropics. 



Hums: The standard adopted is the mean between mean daily 

 maximum and mean daily minimum. 



TUNIS 



Lat. 36° 48' N. Long. 10° 10' E. 

 Pressure. 



After a prolonged investigation, it was decided that the pressure 

 data were not sufficiently reliable for inclusion. 

 Temperature. 

 Authorities : 



1887 to 1908. Paris, Bureau Central Meteorologique de 



France, Annales. 

 191 o. Manuscript data supplied by the Office National 



Meteorologique, Paris. 

 1911-13. Paris, Bureau Central Meteorologique de France, 



Annales. 

 19 14 to 1920. Manuscript data supplied by the Office Na- 

 tional Meteorologique, Paris, and filed in the 

 Meteorological Office, London. 

 Site: The height above Mean Sea Level was : 



1887-1910 43 n\. 



1911-1920 21 m. 



Observations: All values have been corrected to the mean of 

 24 hours by corrections (Table A) based on hourly 

 observations taken at Metlaoui, Tunis. 



1 887- 1 892 from I ( 7I1 -I- 1 3'^ + 1 9'^ + ^ 9t±M}^- -A 



1896-1897 from -;|(Max. + Min.) 



1898 from .|(7h+i3i'+i9i'-fi9l±MiE-^\ 



1899 from ^(Max.-F-Min.) 



1900-1917 from K7''+I3'^+h/+ ig'^iALn.^^ 



1918-1920 from K7''+i3''+ '9'') 

 Precipitation. 



Authorities: As for Temperature. 

 Site: As for Temperature. 



