1883.] On a Series of Barometrical Disturbances. 141 



but from E.S.E. to f.K.W., reaching St. Petersburg at Ob. 20 m. a.m. 

 on tbe 29th, and Valencia at 2 b. 28 m. a.m. on the same day, and 

 traversing tbe distance in two hours and eight minutes. 



IV. A disturbance travelling in tbe same general direction as 

 No. II, but from W.N.W. to E.S.E., reaching Valencia at 2h. m. 

 p.m. on the 29th, and St. Petersburg at 3h. 35 m. p.m., and occupying 

 only one hour and twenty-five minutes in passage. 



Similar disturbances, though of a gradually diminishing intensity, 

 can be traced in most of the barograms, occurring at Valencia at 

 about 3 h. p.m. on the 30th and 2 h. a.m. on the 31st. After this time the 

 traces of disturbance become less distinctly recognisable. Some of the 

 oscillations are more marked at some stations than at others ; the 

 Scotch observatories, in particular, exhibit the later disturbances very 

 distinctly. 



The engraving, which has been prepared in the Meteorological 

 Office, and which shows all the records reduced to the same scale and 

 to Greenwich time, exhibits the barograms at the following stations, 

 which are enumerated in order of longitude, going from east to 

 west : — 



St. Petersburg. 



Pawlowsk.* 



Vienna.* 



Brussels. 



Paris. 



Geldeston (near Beccles, Norfolk). 



Greenwich. 



Kew. 



Oxford. 



Aberdeen. 



Stonyhurst. 



Liverpool. 



Glasgow. 



Falmouth. 



Armagh. 



Coimbra. 



Lisbon.* 



Sierra da Estrella.* 



Valencia. 



Toronto. 



The stations marked with * have not been engraved yet. A table 

 is appended showing the precise times of occurrence of the different 

 phases of the phenomena at each station as accurately as we can 

 determine them. 



I may conclude by saying that the actual record on the barograms 



