1891. J 



BEN NEVIS OBSERVATORY. — INSTRUMENTS, ETC. 



323 



The Barograph (Richard) has been in use all the year. 



The Ozone tests have been discontinued, except as 

 extra observations in special states of the weather, since 

 November. 



Except as regards the rainfall, the observations have 

 not been interrupted during the year. On Dec. 9th at 

 20 h and on Dec. 28th at 21 h and 22 h the temperature 

 readings were got from the tower screen by interpolation- 

 correction. 



The large Dust Counter in tower has been used through- 

 out the year, three-hourly readings being taken for 

 several mouths. The small one is at the Low Level 

 Observatory. 



The Telegraph Instrument has worked well throughout 

 the year. Since April 5th the Low Level observations 

 have been included in the daily reports sent to news- 

 papers. 



The Staff of the Observatory consists of R. T. Omond, 

 A. Rankin, J. Miller, and up to January 10th G. Nisbet. 

 From January 27th to Sept. 23rd G. Day, and since Sept. 

 29th G. Robertson. Mr C. E. Gray acted as telegraphist 

 and observer, and Messrs R. C. Mossman, P. F. Gillies, 

 C. Stewart, H. F. Rankin, A. Drysdale, and T. Dunlay 

 relieved various members of the staff. 



