570 



APPENDIX. 



[No. 



TABLE 



TABLE of OBSERVATIONS on the Deviations of the Magnetic Needle, made at Fort Enterprize, 

 The Asterisks indicate when the Instrument required slight Adjustment. The Degrees of the 



January 



At 10 A.M. 



At Noon 



At 2 P.M. 



At 3 P.M. 



1821 



Position 



of 

 Needle 



Ther. 



Winds 

 and Weather 



Position 



of 

 Needle 



Ther. 



Winds 

 and Weather 



Position 



of 

 Needle 



Ther. 



Winds 

 and Weather 



Position 



of 

 Needle 



Ther. 



Winds 

 and Weather 



Jan.12 



o / 



348 18 



-M 



East, moderate, 

 cloudy 



348 25 



o 



- 5 



East, 

 cloudy 



O / 

 348 28 



-10| 



ENE. moderate, 

 very clear. 



o / 



348 30 



o 



-14 



South, light 

 breezes, clear. 



13 



348 18 



-20 



NE. light airs, 

 cloudy 



348 25 



-16 



NE. light airs, 

 cloudy 



348 25 



-13 



SW. light airs, 

 hazy. 



348 25 



-13 



West, lightairs, 

 snow. 



14 



348 18 



-31 



West, light airs, 

 very clear 



348 22 



-29 



WNW. lightairs, 

 clear 



348 28 



-29| 



W JN W . light 

 airs, very clear. 



348 25 



-32 



West, light airs, 

 clear. 



15 



347 15 



-44 



South, light airs, 

 clear 



347 45 



-37 



West, light 

 breezes, clear 



347 52 



-31 



West, clear, 

 some clouds. 



348 12 



-27 



South, light 

 airs, cloudy. 



16 



348 30 



-24 



West, fresh b. 

 thick clouds 



348 35 



-18 



WSW. fresh 

 breezes, snow 



348 40 



-15 



WSW. snow. 



348 40 



—14 



WSW. fresh b. 

 snow and drift. 



17 



348 28 



zero 



SbW, thick 

 cloudy weather 



348 35 



+ 4 



WSW. lightairs, 

 foggy 



349 10 



+ 5 



WSW. light airs, 



foggy- 



349 15 



+ 5 



Nearly calm, 

 dense fog. 



18 



348 15 



+14 



West, light airs, 

 dense clouds 



348 25 



-1-19 



NW. light airs, 

 snow 



348 30 



+16§ 



SWbW. light 

 breezes, snow. 



348 30 



+12 



East, light b. 

 thick cloudy 

 atmosphere. 



19 



348 22 



zero 



East fresh b. 

 dark and cloudy 



348 30 



zero 



East, strong b. 

 drift and snow 



348 32 



- 2 



East, strong 

 breezes, snow. 



348 32 



- 4 



East, strong b. 

 snow. 



20 



348 28 



-21 



East, fresh b. 

 cloudy 



348 30 



-22 



EbN. strong b. 

 cloudy 



348 35 



-26 



East, strong 

 breezes, cloudy. 



348 35 



-29 



East, modt. b. 

 cloudy. 



21 





—44 



West, light airs, 

 clear 



348 30 



— 39| 



West, light 

 breezes, clear 



348 38 



-38 



Nearly calm, 

 very clear. 



348 40 



-39 



SW. light airs, 

 very clear. 



22 



348 42 



-48 



West, light airs, 

 hazy near the 



348 40 



-42 



West, light airs, 









348 45 



-38 



West, light airs, 



horizon, clear 

 above 



more clear 









clear. 



23 



348 40 



-20§ 



SWbW. modt. b. 

 dark clouds 



348 35 



-14 



WSW. moderate 

 b. dark, cloudy 



348 40 



-13 



WSW. dark 

 and cloudy. 



348 45 



-13 



WSW. modt. b. 

 dark and cloudy. 



24 



346 50 



-14 



ENE. modt. b. 

 dark and cloudy 



347 8 



-11 



East, light airs, 

 dense fog 



348 25 



- 8 



East, light airs, 

 very foggy. 



348 30 



- 71 



ENE. light b. 

 thick weather. 



25 



348 10 



-21 



East, modt. b. 

 very thick 

 atmosphere 



TheN 



eedle 



was accidentally 



shaken, 



and 



the instrument 



required 



to be 



readjusted. 



26 



348 10 



-20 



EbN. light airs, 

 cloudy 



348 12 



-18 



EbN. lightairs, 

 cloudy 



348 15 



-15 



EbN. lightairs, 

 cloudy. 



348 15 



-15 



EbN. light airs, 

 cloudy. 



27 



* 



348 42 



-171 



WbS. light b. 

 cloudy 



348 50 



-18 



Sun shone, 

 some clouds 



348 £0 



-17 



WbS. light b. 

 clear. 



348 15 



-22 



WbS. light b. 

 clear. 



28 



348 30 



- 8 



WNW. light airs, 



348 32 



- 7 



WNW. light airs 



348 32 



- 7 



WNW. light 









dark clouds 



cloudy, fog bow 



airs, hazy 









29 



348 10 



-31* 



NWbW. light 



348 10 



-26 



WNW. light 



3 







* 



348 30 



-22 



WNW. light 



airs, clear 



airs, clear 







breezes, clear 



30 



348 30 



-28 



WbS. modt. b. 



348 30 



-24 



WSW. fresh b. 









.348 32 



-26 



WSW. moderate, 



dark and cloudy 



dark and cloudy 









more clear 



31 



348 25 



-35 



North, light, b. 



348 32 



-35 



NE. moderate, 



348 32 



-38 



NE. moderate, 









very clear 



clear, very cold 



clear, cold 









