570 



APPENDIX 



[No 



TABLE 



OBSERVATIONS on the Deviations of the Magnetic Needle, made at Fort E 



The Asterisks indicate when the Instrument required slight Adjustment. 



Degrees 



amiary 



1821 



Jan.12 



13 



14 



15 



16 



17 



IS 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



31 



Position 



of 

 Needle 



o / 



348 18 



348 18 



348 18 



34T 15 



348 30 



348 28 



348 28 



348 28 



348 42 



348 40 



346 50 



348 10 



348 10 



* 



348 42 



348 30 

 348 10 



348 30 



348 25 



At 10 A.M. 



Ther. 



Winds 

 and Weather 



At Noon 





Position 

 of 



Needle 



Ther. 



Winds 

 and Weather 



At 2 P.M. 



r 



Position 

 Needle 



& 



20 



31 



East, moderate, 

 cloudy 



NE. light airs, 

 cloudy 



West, light airs, 

 very clear 



44 [South, light airs, 



clear 



o , 

 348 25 



348 25 



Winds 

 and Weather 



At 3 P.M 



o 

 5 



16 



348 22 



29 



24 



zero 



348 15 +14 



348 22 zero 



21 



44 



48 



20^ 



14 



21 



20 



m 



West, fresh b. 

 thick clouds 



SbW, thick 

 cloudy weather 



West, light airs, 

 dense clouds 



East fresh b. 

 dark and cloudy 



East, fresh b, 

 cloudy 



West, light airs, 

 clear 



West, light airs, 



hazy near the 



horizon, clear 



above 



SWbW. modt. b. 

 dark clouds 



ENE. modt. b. 

 dark and cloudy 



East, modt. b. 

 very thick 

 atmosphere 



347 45 



348 35 



37 



East, 

 cloudy 



NE. light airs, 

 cloudy 



WNW. lightairs, 

 clear 



West, light 

 breezes, clear 





Position 

 of 



Needle 





Ther. 



Winds 

 and Weather 



o / 



348 28 



& 



348 25 



348 28 



13 



ENE. moderate,] 

 very clear. 



SW. lightairs, 

 "hazy. 



o / 



348 30 



^ 4 South, light 

 breezes, clear. 



348 35 



348 25 



348 30 



348 30 



18 | WSW. fresh 

 breezes, show 



. 4 | WSW. lightairs, 



foggy 



+19 I NW * u £ ht airs > 



snow 



347 52 



348 40 



zero 



22 



348 30 



39 



East, strong b. 

 drift and snow 



EbN. strong b. 

 cloudy 



- 



West, light 

 breezes, clear 



29 i WNW. light 

 21 airs, very clear. 



^ I West, clear, 

 some clouds. 



348 25 



13 



West, lightairs, 

 snow. 



15 



348 25 



348 12 



349 10 



+ 5 



348 30 



348 32 



348 35 



WSW. snow. 



WSW, light airs, 



foggy. 



oo West, light airs 



clear. 



27 I South, light 

 airs, cloudy. 



' 



348 40 



14 



+161] £WbW. light 



breezes, snow. 



2 



349 15 



East, strong 

 breezes, snow. 



2q | East, strong 

 breezes, cloudy. 



348 38 



38 



348 40 



42 i West, lightairs, 



more clear 



348 35 



14 



347 8 



TheN 



11 



348 30 



+ 5 



+12 



348 32 



348 35 



4 



29 



N ve^ear m ' » ™ « 



39 





WSW. moderate 

 b. dark, cloudy 



East, light airs, 

 dense fog 



348 40 



13 



eedle 



^a^'ll 34S „ 



348 45 



38 



WSW. fresh b. 

 snow and drift. 



Nearly calm, 

 dense fog. 



East, light b. 

 thick cloudy 

 atmosphere. 



East, strong b. 

 snow. 



East, modt. b. 

 cloudy. 



SW. light airs, 

 very clear. 



348 25 



8 



WSW. dark 

 and cloudy. 



East, light airs, 

 very foggy. 



348 45 



West, lightairs 

 clear. 



•: 



348 30 



,o . WSW. modt. b. 

 1 dark and cloudy. 



,J ENE. light D' 

 7 2 thick weather. 



was accidentally 



shaken, and the instrument 



38 j EbN. lightairs, 



cloudy 





8 



"I 



28 



35 



WbS. light b. 

 cloudy 



WNW. lightairs, 

 dark clouds 



NWbW. light 

 airs, clear 



WbS. modt. b. 

 dark and cloudy 



North, light, b. 

 very clear 



348 50 



■18 



348 32 



348 10 



348 30 



7 



26 



Sun shone, 

 some clouds 



WNW. lightairs 

 cloudy, fog bow 



WNW. light 



airs, clear 



348 15 



15 , EbN. light airs, 



cloudy. 



required to be readjusted. 





s 



\ 





s 



348 15 



348 50 



17 



348 32 



7 



WbS. light b. 

 clear. 



WNW. light 

 airs, hazy 



348 15 



-- . EbN. light air* 



15 ' cloudy. 

 „ . WbS. light b. 



** ' clear. | ^ 



^ | WSW. fresh b. 

 dark and cloudy 



3 



% 



* 



348 30 





348 32 



35 



348 32 



22 I breezes, clear 



26 



NE. moderate, 

 clear, very cold 



\ 



WSW. modcratej 

 more clear 



\ 



348 32 



33 j NE. moderate, 



clear, cold 





i 



H 



