418 



Report of Magnetical Observations at 



(18° + West.) 



Table I. — Hourly Means of Declination at the Falmouth 



on five selected quiet Days in 



Hours 



Mid. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 





Winter. 





1895. 

 Months. 



Jan. . . 



Feb. .. 



March . 



Oct. .. 



Nov. .. 

 *Dec. .. 



56-1 

 56 -1 

 55-6 

 51 -8 

 52-4 

 51-1 



56 -4 

 56-4 

 55-6 

 51*7 

 52-7 

 51-6 



57 -0 

 56-3 

 55-8 

 51-6 

 53-1 

 51-9 



56 -9 

 56-9 

 55-8 

 51-9 

 53*3 

 52*1 



/ 



56-9 

 56-5 

 55 -8 

 51-7 

 53-4 

 51 '9 



/ 



56-9 

 56-2 

 55-4 

 51 -1 

 53 -2 

 51 -7 



/ 



56-8 

 55-9 

 55-4 

 51'1 

 52 -7 

 51-6 



/ 



56 -3 

 56 -0 

 54-7 



50- 8 

 52-8 



51- 3 



56-0 

 56-3 

 53 -0 

 49-9 

 52-5 

 51-1 



t 



56-5 

 55-5 

 52-5 

 49-7 

 51-6 

 51 -0 



56-9 

 56-5 

 54-4 

 50-9 

 52-2 

 52 -0 



57- 4 



58- 5 

 57 '2 

 53-5 

 53 -4 

 52 -9 





Means 



53-9 



54-1 



54-3 



54-5 



54-4 



54-1 



53-9 



53 -7 



53-1 



52-8 



53-8 



55-5 





Summer. 







/ 







/ 



/ 





/ 









/ 







April . . 

 May . . 

 June .. 

 J uly . . 

 Aug. .. 

 Sept. . . 



55-7 

 53-7 



51- 3 



52- 8 

 52-2 

 52-9 



56'0 

 53-2 

 51-1 

 52 5 

 51-7 

 53-3 



55 -7 

 52-7 

 51 

 51 -8 

 51 '2 

 53 5 



54-9 

 52-8 

 51-0 

 51 -6 

 51 -1 

 53 2 



54-9 

 52 -3 



50- 2 



51- 7 

 50 -6 

 52 9 



54-7 



51- 5 



48 - 8 

 51 -0 



49- 5 



52- 3 



53-6 

 50-4 

 46-8 

 48'9 

 49*1 

 51 -4 



52*5 

 50 -1 

 45 2 

 47-9 

 48'3 

 50-3 



51*8 

 50-2 

 45-2 



48- 1 

 48*5 



49- 1 



52-2 

 51-1 

 46-6 

 49-1 

 49-5 

 49-5 



54*4 

 53 -4 

 49-6 

 51-1 

 51-5 

 51-9 



57 -4 

 56-8 



53- 2 



54- 3 

 54 3 

 54*7 





Means 



53 -1 



53-0 



52 -7 



52-4 



52-1 



51-3 



50*0 



49'1 



48-8 



49-7 



52 



55 -1 











* Mean of four days, 4th, 5th, 6th, and 16th. 



















Table II. — Solar Diurnal Range of the Falmouth 



Hours 



Mid. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 





Summer mean. 



/ 











/ 





t 



/ 







-0-8 



-0"9 



-1-2 



-1-5 



-1-8 



-2-6 



-3-9 



-4'8 



-5-1 



-4-2 



-1*9 



Winter mean. 



/ 























-1-1 



-0-9 



-0-7 



-0-5 



-0-6 



-0*9 



-1-1 



-1-3 



-1-9 



-2-2 



-1-2 



Annual mean. 

















i 



/ 



/ 





-1-0 



-0-9 



-1-0 



-1-0 



-1-2 



-1-8 



-2-5 



-3-1 



-3-5 



-3'2 



-1-6 



Note.— When the sign is + the magnet 



