Meteorological Observations taken in Edinburgh. 299 



XX. Results of Meteorological Observations taken in JSdin- 

 hurgh during 1899. By E. C. Mobsman, F.E.S.E., 

 F.RMet.Soc. 



(Read 21st February 1900.) 



The observations discussed in this paper are deduced from 

 readings of the standard instruments made daily at 9 a.m. 

 and 9 p.m., the values thus obtained being checked by 

 comparison with the automatic records from the barograph, 

 thermograph, and hygrograph, as described in previous 

 reports. The station was inspected on September 18th by 

 Dr Buchan, and everything found in good order, except 

 that the maximum thermometer was reading 0°*4 too low. 

 As the instrument agreed with the inspector's standard in 

 the autumn of 1898, I have assumed the error to be a 

 progressive one, the correction applied being 0°*1 for the 

 last three months of 1898, and 0°-2, 0°'3, and 0°-4 for each 

 succeeding quarter of 1899. The values given in the tables 

 for the first nine months of last year will accordingly be 

 found to differ slightly from the returns supplied to the 

 Eegistrar- General for Scotland, and published in his weekly, 

 monthly, and quarterly reports. The columns affected are 

 those giving the absolute maximum, mean maximum, mean 

 daily range, and monthly range of temperature. Since 

 September the error has remained constant at O''^. The 

 instrument in question has been in use since June 1887, 

 and has hitherto agreed with the standard thermometer 

 of the inspector. All the thermometers employed, it may 

 be said, are engine divided on the stem and have Kew 

 certificates. 



During the year the instruments in use have been the 

 same as formerly, the only addition being one of Stevenson's 

 cloud-reflecting compasses for determining the movement of 

 clouds. 



The kite-flying experiments referred to in last report have 

 been continued, with the able assistance of Mr Anderson 

 and Mr Lonie. About fifteen flights were made from a 

 temporary station in the vicinity of Leadburn, 17 miles 

 south of Edinburgh. The meteorograph has not yet been 



