TABLE I. 



OBSERVATIONS ON THE MAGNETIC-NEEDLE, 



AT CUMBERLAND-HOUSE, HUDSON'S BAY, 

 JUNE 11, 1820. 



By LIEUTENANT ROBERT HOOD, R.N. 



In the month of February 1820, an Azimuth Compass was fixed in the open air, with a small minutely-divided 

 metal arch on the edge of the card ; and the diurnal variation of the needle was ascertained as noted in the following- 

 table. Many interruptions prevented a more complete series of observations ; and the present will serve only to shew 

 the amount in general, and the direction of the variation. 



EASTERLY VARIATION. 





FEBRUARY, 1820. 



MARCH. 





Days. 



9 A. M. 



Noon. 



1P.M. 



4 P. M. 



8 P.M. 



12P.M. 



Days. 



9 A.M. 



Noon. 



IP. M. 



4T. M. 



8 P. M. 



12 P.M. 































o 



i 





o / 



O / 



O / 



O / 



1 



























1 



17 



17 





17 14 



17 12 



17 14 



17 16 



2 



























2 



17 



14 





17 11 



17 14 



17 15 



17 16 



3 



























3 



17 



17 





17 14 



17 15 



17 17 



17 17 



4 



























4 



17 



18 





17 14 



17 13 



17 17 



16 45* 



5 



























5 



17 



14 





17 12 



17 12 





17 16 



6 



























6 



17 



14 





17 8 



17 8 



17 13 



16 38* 



7 



























7 



17 



13 





17 7 



17 7 



17 10 



17 10 



8 



























8 



17 



13 





17 6 



17 7 



17 10 



17 13 



9 



























9 



17 



14 





17 8 



17 9 



17 11 



17 13 



10 















o 













10 



17 



14 





17 8 



17 9 





16 35* 



11 



o 





o 









i 



o 



i 



o 





11 



17 



14 





17 6 



17 4 



17 8 



17 32 



12 







17 



8 







17 



8 







17 



10 



12 



17 



13 





17 8 



17 8 



17 10 



17 12 



13 



17 



17 



17 



9 







17 



7 







17 



13 



13 



17 



14 





17 10 



17 10 





17 13 



14 



17 



16 



17 



13 







17 



8 







17 



11 



14 



17 



15 





17 10 



17 12 



17 12 



17 12 



15 



17 



17 



17 



8 







17 



9 



17 



9 



17 



9 



15 



17 



15 





17 9 



17 9 



17 10 



17 11 



16 



17 



17 



17 



13 







17 



16 











16 



17 



15 





17 9 



17 10 



17 11 



17 



17 



17 



17 



11 







17 



16 



17 



16 



17 



16 



17 



17 



15 





17 10 









18 



17 



17 



17 



10 







17 



9 



17 



10 



17 



10 



18 



17 



15 





17 9 



17 9 



17 13 



17 15 



19 







17 





o 



i 



17 





17 



12 



17 



16 



19 



17 





17 7 



17 



16 



8 







4 



14 





17 7 



17 10 



17 10 



20 



17 



15 







17 



11 



17 



9 







17 



11 



20 



17 



15 





17 9 





17 13 



17 15 



21 



17 



16 







17 



13 



17 



13 







17 



15 



21 



17 



18 





17 10 



17 11 





17 15 



22 



17 



16 







17 



12 



17 



12 



17 



14 







22 



17 



18 





17 10 





17 11 



23 



17 



16 







17 



12 



17 



13 



17 



15 



17 



15 



















24 



17 



16 







17 



14 



17 



10 



17 



10 



17 



13 



















25 



17 



16 







17 



11 



17 



11 



17 



11 



17 



14 



















26 



17 



16 







17 



13 



17 



12 



17 



11 



17 



11 



















27 



17 



14 







17 



11 



17 



12 



17 



14 



17 



15 



















28 



17 



16 







17 



12 



17 



13 



17 



15 



17 



15 



















29 



17 



15 







17 



11 



17 



12 



17 



12 



17 



16 

















* See the observations at the end. 



4 A 2 



