Report of t lie Keto Committee. 77 



the Beckley rain gauges at Aberdeen, Falmouth, and Valencia, and 

 one has since been forwarded to Dr. Dreyer for him to fit at Armagh. 



The barograph and thermograph formerly in use at the Armagh 

 Observatory, after being put in thorough repair, have been erected in 

 the Verification-house and temporarily set to work, awaiting the 

 decision of the Meteorological Council as to their final disposition. 



With the sanction of the Meteorological Council, weekly abstracts 

 of the meteorological results have been regularly forwarded to, f u nd 

 published by ' The Times ' and ' The Torquay Directory.' Data 

 have also been supplied to the Council of the Royal Meteorological 

 Society, the editor of ' Symons's Monthly Meteorological Magazine,' 

 the Secretary of the" Institute of Mining Engineers, Captain Abney, 

 Dr. Rowland, and others. The cost of these abstracts is borne by the 

 recipients. 



Since January last tables of the monthly values of the rainfall and 

 temperature have been prepared and sent to the Meteorological Sub- 

 Committee of the Croydon Microscopical and Natural History Club 

 for publication in their Proceedings. Detailed information of all 

 thunderstorms observed in the neighbourhood during the year has 

 also been regularly forwarded to the Royal Meteorological Society 

 soon after their occurrence, special forms having been provided by the 

 Society for the purpose of collecting such information with the view 

 to special investigation. 



JSlectrograpli. The electrograph under repair at time of last Report, 

 owing to its partial destruction by fire, has been put in thorough 

 order. The de la Rue battery, employed to charge it, has been 

 cleaned, and its cells refilled by the makers. The scale- value of the 

 instrument has been again determined by means of the portable elec- 

 trometer (White's) and found to be practically unaffected by the 

 accident. 



A paper giving a summary of the results afforded by the instru- 

 ment is at present in preparation. 



The electrometer lent to Mr. Abercromby for the purpose of making 

 observations during his expedition to Teneriffe was returned to the 

 Observatory in good order on the termination of his experiment, and 

 on trial the value of the scale division was found to be unaltered. 



In consequence of an accident whilst cleaning, the instrument 

 required re-adjustment in March, but no alteration was found to have 

 resulted to its sensitiveness when again tested at the laboratory in 

 Charlotte Street, facilities being afforded for this by the kindness of 

 the Chairman. 



