316 



EEFORT— 1866, 



IRELAND, 



Division XXII. — Connaughx (continued). 



Division XXIII. — Ulster. 



Galway [continued). 



Height of 

 Eain-gauge 



above 

 Ground . . . . 

 Sea-level .... 



January .... 

 Februai-y.... 



March 



April 



May 



June 



July 



August 



September . 

 October .... 

 November , 

 December . 



Totals 



Galway, 

 Queen's 

 College. 



6 ft. in. 

 25 ft. 



1864. 1865. 



m. 

 4-62 

 4-16 



S'33 

 2-99 

 2-88 



5-41 

 3-01 

 4-10 

 7-32 

 4-88 

 923 

 4-14 



58-07 



in. 

 9"oi 



5-04 



2-54 



•74 

 4-19 



I"26 



4'6o 

 4-91 



2'2I 

 5-91 



3"97 

 4-52 



48-90 



Sligo. 



Cavan. 



Doo Castle. 



1 ft. in. 



1864. 1865. 



in. 



304 

 rSo 

 2-97 

 1-90 

 2 -04 

 2-84 

 I -60 

 2-32 

 4-42 



2'19 



5-23 

 i'54 



31-89 



in. 

 4-65 

 2-86 

 3-28 

 1-40 

 2-55 

 1-33 

 3-99 

 3-85 

 ■61 

 S-6i 

 498 

 4-51 



39-62 



Sligo, Hazlc- 

 vrood. 



2 ft. 4 in. 

 47 ft. 



Eed Hills, 

 Belturbet. 



ft. 9 in. 



1864. 1865 



m. 

 2-70 

 2-41 

 2-og 

 2-44 



3-85 

 3-87 

 1-79 

 2-09 

 5-23 

 2-31 

 7-06 

 1-80 



1864. 1865. 



m. 

 4-16 



3-51 



47+ 



37-64 



65 

 2-25 



-97 

 3-08 

 6-16 



-89 

 5-69 

 4-20 

 4'Si 



41-81 



1-68 



153 

 2-34 

 2-29 

 1.80 

 2-94 



i'53 

 1-96 

 4-19 

 .-56 

 5-19 

 2-06 



27-07 



m. 

 3-28 

 4-62 

 2-84 

 •78 

 4-05 

 -48 

 2-91 



3'93 

 -66 

 5-92 

 412 

 3"33 



36-92 



Fermanagh. 



Florence 

 Court. 



11 ft. Oin. 

 300 ft. 



1864. 1865 



m. 

 269 



159 



3-17 



2-07 

 1-80 

 3-04 

 •84 

 2-37 

 2-36 

 1-30 



599 

 2-21 



29-43 



in 

 4-09 

 4-38 



3-i8 



i-io 



3-67 



-61 



3-05 

 5-11 



■99 

 5-85 



S"i9 

 5'93 



43'iS 



Akm.agii. 



Armagh 

 Observatory. 



EXAMINATION OF llAIN-GAUGES. 



As an introduction to the following Tables, and also as calculated materially 

 to avoid continued repetition, it may be well to refer briefly (1) to the objects 

 of this examination, (2) the means adopted to carry it into effect, and (3) to 

 explain the results herein given. 



(1) The objects of this examination are principally to ascertain the accu- 

 racy of the gauges in actual use, the suitability of their position, the correct- 

 ness of the mode and time of observing, and generally to advise the observers 

 concerning the proper management of their gauges under all circumstances. 



(2) The means adopted simply consist in Mr. Symons's visiting each sta- 

 tion, and personally measuring every important element concerned, the details 

 being entered at the time in printed forms prepared for the purpose*. 



(3) The result of 166 such examinations in different parts of the British 

 Isles are given in the following Table, in which only two points appear to re- 

 quire any explanation: — (1) That the Roman numerals refer to the gauges 

 in Plate VI., and denote the general form which the gauge most nearly re- 

 sembles, since the varieties of form are so numerous that it would be undesi- 

 rable to represent each exactly. (2) The mode of testing usually consists in 

 filling the glass belonging to the gauge up to various points (called in the 

 Table scale-points, i. e. points on the scale) ; this quantity is then measured 

 in grains, and entered as "grains equivalent to scale-point," then the 

 difl'erence between, this observed quantity and that which is due to that 



* The following -were not measured by Mr. Symons : — Nos, 1 to 12, 56, and 58 tP 61. 



