185 



PHILOSOPHICAL TRANSACTIONS. 



[anno J 757. 



, . Longitude, 

 *^j'" from Anno 

 *"°^- London. 1700. 



Anno 

 1710. 



Vauiation. 

 Anno Anno 

 1720. 1730. 



Anno 

 1744. 



Anno 

 1756. 



Lati- ^'«"S''t"<^c, 



from Anno 



tude. 



London. 1700. 



Variation. 

 Anne Anno Anno Anno Anno 

 1710. i7'iO. 1730. 1744. irsfl. 



Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees 



35 s 

 35 s 

 35 » 

 35 s 

 35 8 

 35 > 

 35 s 

 35 s 

 35 1 

 35s 

 35 8 

 35 8 

 35 s 







5 w 

 10 w 

 15 w 

 20 w 

 25 w 



'2^w 







2iE 



4| E 



6|e 



8|e 



30 w 10| E 



35 w 12|e 

 5 E 



10 E 



15 E 



20 £ 



25 E 



4 w 

 1 w 



1|K 



5| w 

 2|w 



o|w 



i w 

 4 w 

 l|w 



i>^ w 10| w 

 ^1 w 7 j w 



3|w 

 OJw 

 2|e 

 5 E 



94 E 



5|w 

 2}w 



()| E 

 3 E 



5|e 

 8|e 



5 w 

 74 w 



6iw s \r 9jw 11 w 13 w 



.^. gjw lO^w ll|w 13|w I54W 



9|w ll|w I2|w 144 w 15|w 17|w 



12jw 14 w 15|w 17 w Kslw 19|w 



^„ 15}w l6|w 18 w 194w 20|w '22|w 



35 « 30 E 184 w '9|w 20jw 2l|w 22| w 24| w 

 35 8 35 E 21 w 22 w 22| w 23| w 2 ^| w 26 w 

 35 8 40 E 223 w 23J w 244 w 25 w 26 w 26| w 

 35 s 45 E 244 w 25 w 25 w 26 w 27 w 26 w 

 35 s 50 E 241 w '234 w 25| w 26 w 26^ w 24| w 

 35 8 55 E 244 w 24^ w 24| w 24| w 25 w 23 w 

 35 8 60 E 23 w 23 w 23 w 22| w 22|w 21 w 

 35 8 65 E 21 J w 214 w 21 w 20|w 20} w 1>| w 

 35 i 70 E 19|w 15)4 w 18jw 184 w '7iw ir|w 

 35 8 75 t: 184 w ^7|w irjw 17] w 16 w 154 w 

 35 8 80 E Ibjw 164 w 151 w 15 144 w '^l^ 

 35 t 85 £ J 5 w 14|w 14 w IS^w 13 w 13| w 



Degrees Degrees Degrees Degrees Degrees Degrees 

 35s 5 K I3|w 13 w 12^ w 12^ w 

 55 s 95 E ll| w 11^ w 11 4 w 1 1 w 

 3^ w 5 w 6| w 

 o| w 2 w 3I w 



40 s 

 40 s 

 40 s 

 40s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40 s 

 40h 

 40s 

 40 s 

 40 s 

 40 s 



O 



5 w 

 10 w 

 15 w 

 20 w 

 25 w 

 30 w 

 .5 E 

 10 E 

 15 E 

 20 E 

 25 E 

 30 E 

 35 E 

 40 E 

 45 E 

 50 E 

 55 

 60 

 65 

 70 

 75 

 80 



2 w 



Oj E 



3} E 



5| E 



8 E 



10| E 



I2I E 



4j w 



74 w 



91 w 



1'2| w 



16 w 



19 w 



21| w 



23^ w 



254 w 



26 w 



254 w 



24 w 



22J w 



20^ w 



194w 



17|w 



6 w 

 8^w 

 lljw 

 144 w 

 174w 

 20 w 

 22|w 

 ':^ w 

 26 w 

 26|w 

 25 1 w 

 '24 w 

 22i w 

 20^ w 

 18|w 

 17 w 



7i w 

 10 w 

 12j\v 

 151 w 

 \sl w 

 214W 

 23i\v 

 25 w 

 26| w 

 27 w 

 25|w 

 2+ w 

 224 w 

 204 w 

 184 w 

 l6iw 



9 w 

 11| w 

 14 w 

 17 w 



191 w 

 224 w 

 24| w 

 26 w 

 271 w 

 27l w 

 26 w 

 244 w 

 '224 w 

 20 w 

 I7iw 

 16 w 



Degrees 



12 w 



10^ w 



7^ w 



5 w 



2iw 



oIe 



34 £ 

 5k E 



8 E 



104 w 

 12iw 

 lol W 

 18iw 

 214 w 

 23|w 

 25I w 

 27 'w 

 284 w 

 284 w 

 •26} w 

 244 w 

 2'2 w 



191 w 



i?4w 



15| w 



Degree* 

 12|>r 



9iyf 

 6|w 

 Hvr 

 ikw 

 14 » 

 4 K 



12 yr 



^Hw 

 l^w 

 '20 w 



234 w 

 27 W 

 2^w 

 274 w 

 26 w 

 24^ w 

 22| w 

 20|w 



m^ 



184 w 

 174 w 



Variation of the Magnetic- Needle, from the Islands of Orkney to Hudson s 



Straits, for the Year 1757. 



Degrees of North Latitude. 

 58 59 60 61 



West LongitudH 

 from London. I 



Degrees. 

 4 

 10 

 27 

 45 

 55 

 65 



"hh .2 



«5 2 



56 57 



29 29 



39 



40 



_62 63_ 



19 

 21 



41 



63 



43 



40 

 40 



We have been informed, thflt in Hudson's Bay, there has been very little alteration in the variation 

 of the compass during the 20 years last past. 



