l6 SMTTTISONIAN MISCELLANEOUS COLLECTIONS VOL. 79 



GAMBAGA, GOLD COAST 

 Lat. 10° 31' N. Long. o° 26' W. 



Precipitation. 

 Aiithoriiies: 



1899 to 1920. Manuscript returns communicated liy the 

 Director of the Medical and Sanitary Service, and 

 filed in the Meteorological Office, London. 

 From 1899 to 1912 June, the returns give daily observations ; 

 from 19 1 2 July to 1920 December, monthly sum- 

 maries only are available. 

 Site: There is no information regarding the instrument or its 

 exposure. The site of the station is probably about 

 350 ft. above Mean Sea Level. 



HELWAN, EGYPT 

 Authority. 



Physical Department, Ministry of Public Works. Cairo, Egypt. 

 Pressure. 



Site: The height of the barometer above Mean Sea Level was 



1 15.6 m. throughout the period. 

 Instrinncuts: A barograph was in use throughout the period con- 

 trolled by the following barometers : 

 1904 to 191 1 August. Fuess Syphon 461 index 



error correction applied — o.i mm. 



191 1 August to 1922 July. Fuess Syphon 432 



index error correction applied +0.2 mm. 



1922 July to December. Fuess Syphon 430 index 



error correction applied 0.0 mm. 



Hours: The values are the means of 24 hourly readings from 

 the barograph controlled by eye observations at 

 8*^, 14'' and 2o'\ 

 Notes: The readings are at normal gravity (Lat. 45°) and sta- 

 tion level, a correction of — i.oo muL having been 

 applied to the eye observations. 

 Temperature. 



Ii.rposure: There has l)een no change of exposure during the 



series. 

 Flours: 



1904 to T905. The values are from the dry bulb observations 

 at 8'', 14'^ and 2o'\ and the minimum thermometer 



