6m 



APPENDIX. 



[No. IV 











TABLE VIII. 









An Abstract of the Observations made on the Dip of the Magnetic Needle, between York Factory 











and Point Turnagain. 

















Difference 

 produced by 

 changing the 

 Face of the 

 Instrument 













Date 



Latitude 



Longitude 



Amount of 



Variation 



Ther. 



Direction of Winds, 

 and 



Place of Observation 



Observer 



1819 



North 



West 



nip 



East 



State of Atmosphere 



Sept. 4 



o / * 

 57 00 03 



O / 



92 26 00 



O / ,/ 



79 29 7 



o / '/ 



11 3 40 



O ■/ ;/ 



6 00 21 



o 



+43 



ESE. moderate and 

 cloudy 



York Factory 



B.H.F. 



26 



54 57 4 



94 56 30 



80 37 50 



3 45 20 



11 50 0 



+56 



SE. moderate, very 

 clear 



Magnetic Island, 

 Knee Lake 



F. 



Oct 7 



53 41 38 



98 00 52 



83 40 10 



7 39 00 



14 21 41 



+44 



North, moderate and 

 clear 



Norway House 



F. 



Nov. 24 



53 56 40 



102 16 31 



83 9 45 



13 3 6 



17 17 29 



+24 



In the room 

 midair 



North, light breezes, 

 clear 



In a room at Cum- 

 berland House 



F. 



Dec. 1 



53 56 40 



102 16 31 



83 12 40 



12 50 55 



17 17 29 



+29 



North, light airs, 



In the air at C. House 



H F. 



1820 







C 81 45 48 



f!7 48 03} 

 ll9 17 40 5 



16 29 30} 



17 43 20 ) 





Marked 



side of the needle) 



Cumberland House 



H. 



June 11 



53 56 40 



102 16 31 



( 84 24 40 

 f84 5 25 

 184 21 50 



17 



towards 

 Needle 



+58 



the observer. . . j 

 inverted 



ENE. moderate, clear 



29 



55 26 45 



107 52 45 



25 15 48 



Isle a la Crosse 



H. 



July 9 



56 43 0 



109 53 0 



r85 9 30 



6 39 40} 





4-62 



NE. fresh, cloudy 



North side ofMeihye 



H. 



(.85 5 40 



9 21 00> 





Portage 



14 



58 42 38 



111 18 55 



OK 0*> <IO 



o5 16 <±l 



6 2 10 



22 47 34 



+68 



East, light breezes, 

 clear 



tort Cnipewyan 



B.H.F. 



Aug. 1 



62 17 19 



114 9 34 



86 38 02 



6 49 57 



33 35 55 



+72 



SE. light airs, very 

 clear 



Fort Providence, N. 

 side of Slave Lake 



B.H.F. 



11 



63 47 49 



113 46 35 



87 11 48 



7 4 3 



36 45 30 



+56 



East, light airs, very 

 clear 



Upper Carp Lake 



B.H.F. 



16 

 30 



64 15 17 

 64 28 24 



113 2 39 

 113 6 00 



87 20 35 

 87 25 57 



7 13 37 



6 44 54 



36 50 47 



35 45 28} 



36 15 0$ 



+77 



+55 



South, light airs, 

 clear 



NNW. light airs, 

 clear 



Portage at the North 

 end of Grizzle Bear 

 Lake 



Fort Enterprise 



B.H.F. 

 F. 



1821 

 June 9 



64 28 24 



113 6 00 



f87 3 13 

 186 54 12 



15 56 03 

 19 45 54 



36 24 7| 



37 24 0) 



+73 



SE. light breezes, 

 stratified clouds 



Fort Enterprise 



F. 



10 



«7 2 20 



116 28 00 



r 87 28 12 



16 39 24) 



44 11 42 







Below the Rocky De- 

 file Rapid, Copper 

 Mine River 



F. 



(87 34 24 



15 34 363 









21 



67 47 50 



115 36 49 



r88 3 27 

 1 88 6 48 



6 28 54) 

 9 21 12) 



46 25 52 



+49 



NNE. light b. foggy 



Mouth of the Copper 

 Mine River 



F. 



31 



67 19 23 



109 44 30 



C 88 54 57 

 C89 2 30 



5 20 42*1 

 1 20J 



40 59 23 



+63 



WSW. moderate b. 

 streaked clouds 



The first Cascade in 

 Hood's River 



F. 



Aug. 20 



68 18 50 



109 25 d.r. 



110 5 Chr. 



1 



J89 56 3 

 189 6 21 



2 42 30| 

 0 24 54-) 



44 15 46 



+33 



SW. fresh breezes, 

 dark clouds. 



Point Turnagain 



F. 



