WHOLE VOL. NOTES. EUROI'li 43 



The totals are derived from the records of a Beckley self-register- 

 ing rain gage at King's College about 50 in. to the north-east 

 of the Observatory Tower. 



The heights of the barometer, thermometer and rain gage are 

 given at the heads of the appropriate tables. 



GIBRALTAR 



Lat. 36° 6' N. Long. 5° 21' W. 



Height of Barometer Cistern above Mean Sea Level 53 ft. 



Meteorological observations were commenced at Gibraltar in Febru- 

 ary 1852 under the direction of the Commanding Officer of the Royal 

 Engineers. Observations were taken twice daily, at 9.30 a. m. and 

 3.30 p. m. Local Time. 



On April 1. 1862 the instruments were transferred to the Senior 

 Officer of the Army Medical Department, the hours of observation 

 being altered to 9 a. m. and 3 p. m. Local Time. 



At the beginning of July 1908 three observations were taken each 

 day, i. e., at 7 a. m., i p. m. and 9 p. m. Greenwich ]\lean Time. 



No observations were published for April 1862 or December 18(^13 

 and the original schedules are said to have been destroyed. For 18(14- 

 1865 only the printed abstracts in " Meteorological Observations at 

 Foreign and Colonial Stations" (M. O. Official Pul)lication No. 83) 

 exist, the original returns for these years also having been destroyed. 



Pressure. 



From August-October 1855 ^lie original returns are missing, as is 

 also the return for December 1872. 



Barometer readings from February 1852-June 1855 were taken 

 with Barometer 50 P by Barrow & Co. (Index and Capil- 

 lary correction 4-. 01 1 iiL), the height of the l)arometer cis- 

 tern being 46 ft. above Mean Sea Level. 



After July 19, 1855 readings were taken from the barometer in 

 the Garrison Library " which has no correction, is made by 

 Cox, London and fixed 75 ft. above Mean Sea Level." 



Barometer 50 P by Barrow was repaired and taken into use again 

 on March 10, 1856, the correction for index and capillary 

 action now being 4- .013 iu. while the height above Mean 

 Sea Level remained at 46 ft. 



In January 1861 Barometer 15 made by Barrow was used, this 

 instrument was fixed at a height of 53 ft. above Mean Sea 

 Level its index, etc. correction being 4- .009 in. 



