ON JIKTKOUOLOGICAL OBSERVATIONS ON BEN NEVIS. 



3; 



The following Table gives the normal raontlily temperature and 

 pressure at sea-level at Fort William, taken from Mr. Buchan's 'Papers 

 on the Climate of the British Lslanda ' (' Joui'nal of Scottish Meteoro- 

 logical Society,' vol. vi. pp. 4—40), and the calculated normals for the 

 Ben Nevis Observatory : — 



These normals for pressure at the Bon Nevis Observatory have been 

 arrived at from a table of corrections fv)r the height (4,40G feet) which 

 lias been prepared directly fr6m observations of the High and the Low 

 Level Stations, the observations at the latter being reduced to sea-level. 

 The approximate corrections have been calculated for each tenth of an 

 inch of the sea-level pressure, and for each degree Fahr. of the mean 

 temperature of the stratum of air from sea-level to the top of the 

 mountain. The arithmetical mean of the temperatures ac the base and 

 the top has been assumed as the mean temperature of the intervening 

 stratum. 



The results of these observations will shortly be published, in detail, 

 in the ' Journal of the Scottish Meteorological Society.' Thereafter a 

 more complete examination of the observations at both stations will be 

 resumed, and comparisons made of the two sets of observations, more 

 especially as regards the relations of the varying results to the changes 

 of weather which have preceded, accompanied, and followed them. 



ngstone 

 9, and 

 nado in 

 TOgraph 

 contri- 

 u Nevis 

 rvations 

 months 

 ber, and 



Report of the Committee, consistinr/ of Mr. James N. SnooLiiHED 

 {Secretary) and Sir William Thomson, appointed for the pur- 

 pose of reducing and tabulating the Tidal Observations hi the 

 English Channel made xvlth the Dover Tide-gauge, and of 

 connecting them ivlth Observations made on the French coast. 



The Committee beg leave to report that the tidal curves of the self-register- 

 ing tide-gauge at Dover for the years 1880, 1881, 1882, and 1883 have 

 been kindly placed at their disposal by the Board of Trade, for reduction 

 and tabulation ; and that the Belgian Government has been good 

 enough to present to the Committee copies of the tidal curves at Ostend 

 during the same period of four years. 



The reduction and tabulation of the high and low water registers of 



