30 



Land Magnetic Observations, 1911-13 



AFRICA. 



French West Africa. 



station 



Latitude 



Long. 

 East 

 of Gr. 



Dat3 



Declination 



Local Mean Time Value 



Inclination 



L. M. T. 



Value 



Hor. Intensity 



L. M. T. Value 



Inatnimenta 



Mag'r Dip Circle 



Obs'r 



Cape Blanco 



Hasai Bou-Ghassa 



Camp 48 from In-Salah 

 Hassi Yerlick (Arhli) . . 

 Camp 53 from In-Salah 



Portendick 



Kidal 



Oued Eguerer 



In-Tassik 



Bamba 



Bourem 



Camp 6 from Kidal .... 



Yoro 



Timbuktu, .1 



Timbuktu, B. 



20 48.5 N 

 20 01.8 N 



19 41.6 N 

 19 02.1 N 

 18 49.1 N 



18 26.5 N 



18 25.5 N 

 18 09.1 N 

 17 26.2 N 

 17 00.5 N 



16 56.9 N 

 16 51.9 N 

 16 49.5 N 

 16 46.3 N 



16 46.3 N 



Podor 



Gao 



Gao, Secondary 



St. Loms 



Niafunk^ 



Ansongo 



Matam 



Gourao 



Rapids of Labbezanga 



Bakel 



Dakar 



Mopti 



Kayes 



Tillabery 



Kaolack 



Koumpentoum 



16 39.4 N 



16 16.1 N 

 16 16.1 N 

 16 02.9 N 

 15 56.0 N 

 15 39.7 N 



15 39.1 N 

 15 18.3 N 

 14 57.4 N 

 14 54.3 N 

 14 42.0 N 



14 30.1 N 

 14 26.9 N 



14 12.0 N 



14 07.8 N 

 13 58.4 N 



342 58 



2 08 



1 55 

 143 

 124 



343 59 



1 19 

 40 

 03 



358 32 



359 35 

 07 



358 19 

 356 58 



356 58 



345 03 



359 53 

 359 53 

 343 34 

 356 00 

 26 



346 45 

 355 59 



37 



347 33 

 342 35 



355 47 

 348 34 



120 



343 58 

 345 30 



Jul 15,'12 

 Mar 16. 13 

 Mar 17, 13 

 Mar 18, 13 

 Mar 22, 13 

 Mar 24. 13 

 Mar 25, 13 

 Jul 19,12 

 Jul 20,12 

 Mar 28, 13 

 Apr 12, 13 

 Apr 16, 13 

 May 2,13 

 May 3,13 

 Apr 27,13 

 Apr 18, 13 

 May 7,13 



2,13 

 2,13 

 3,13 

 3,13 

 5,13 

 5,13 

 7.13 

 8.13 

 8.13 

 9,13 

 11,13 

 11,13 

 11,13 

 19,13 

 19,13 

 2,13 

 2,13 

 3.13 

 3,13 

 4,13 

 5,13 

 5,13 

 7,13 

 8,13 

 8,13 

 9,13 

 12,13 

 13,13 

 Apr 21, 13 

 Apr 22, 13 

 Jul 26, 12 

 26,13 

 2,13 

 3,13 

 2,13 

 30,13 

 7,13 

 Sep 26, 13 

 Jul 30,12 

 Jul 31, 12 

 Aug 15, 12 

 Nov 26, 13 

 Nov 27, 13 

 Aug 3,13 

 Sep 16,13 

 Sep 20,13 

 Aug 12, 13 

 Aug 13, 13 

 Aug 2, 12 

 Aug 7, 12 



Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Jul 

 Oct 

 Oct 



Jul 



Aug 



Aug 



Oct 



Jul 



Aug 



h h 

 12.1. 13.8 

 15.0. 17.1 



17 59.2 W 

 11 59.5 W 



7.6, 9.6 



13.8, 15.9 



6.3, 9.9 



13.8, 15.9 



11 52.4 W 



12 14.9 W 



12 16.4 W 



13 03.0 W 



9.0, 11.4 

 8.3, 10.7 



9.1, 11.4 



9.0, 11.9 

 15.0, 17.3 



7.1, 9.5 

 12.9, 14.9 



6.5, 8.4 

 15.6, 17.9 



12 37.8 W 



12 28.6 W 



13 24.4 W 

 13 40.5 W 

 13 41.5 W 

 13 37.9 W 

 13 44.4 W 

 13 39.5 W 

 13 42.8 W 



7.7 



7.8 to 12.7(dv) 



12.9 



12.7, 13.0 .... 

 13.1 to 20.3 (dv) 



9.0, 11.9 .... 

 15.0, 17.3 .... 



7.1, 9.6 .... 

 12.9, 14.9 .... 



6.4, 7.7 .... 



6.5, 8.4 .... 

 15.6, 17.9 .... 



13 40.3 W 

 13 40.0 W 

 13 38.2 W 

 13 42.8 W 

 13 42.8 W 

 13 40.6 W 

 13 41.6 W 

 13 37.8 W 

 13 43.5 W 

 13 39.6 W 

 13 40.2 W 

 13 42.6 W 



8.3, 10.7 



12.8, 14.7 



17.7, 17.8 



12.8, 14.7 

 7.8, 10.8 



13.8, 16.3 



17 35.6 W 

 12 41.4 W 

 12 40.5 W 



18 08.4 W 

 14 02.4 W 

 12 22.6 W 



8.2, 10.5 



8.5, 10.4 



5.6, 10.9 

 7.8, 9.9 



13.9. 15.8 



17 29.2 W 

 14 16.8 W 

 12 33.7 W 



17 18.0 W 



18 33.0 W 



10.5. 14.2 



8.8. 8.9 



8.0, 10.6 



8.1, 10.8 



18 31.2 W 

 18 27.4 W 

 14 24.0 W 

 17 00.8 W 



h 

 15.8 



37 21.5 N 



b b 



12.6, 13.5 



15.7. 16.6 



r 



.29522 

 .31170 



7.6 



17.6 

 15.4 



10.5 .. 



11.0 

 10.8 

 11.6 

 13.5 

 17.3 

 9.2 

 15.4 

 14.3 

 16.2 



28 04.2 N 

 25 57.7 N 

 25 24.8 N 



14.2, 15.5 

 10.0, 11.0 

 15.0, 16.4 



.31770 

 .32175 

 .31942 



24 46.6 N 



14.0, IS.l 



.30200 



8.8, 13.4 

 7.8 .... 

 11.1 .... 

 8.1, 10.4 



9.0, 13.4 

 7.8 .... 



11.1 .... 



8.1, 10.4 

 15.6 



16.2 



16.8 

 17.3 



13.2 

 16.6 

 14.5 

 15.3 

 12.8 



10.2 

 16.4 



10.0 

 12.8 

 16.3 



17.2 



9.2, 11.4 



8.6, 10.3 



8.7, 9.4 



12 26.8 W 

 18 21.2 W 

 17 57.8 W 



14.3 

 14.3 



32 57.0 N 

 24 11.0 N 

 23 54.8 N 

 22 11.1 N 

 22 00.0 N 

 22 01.6 N 

 21 12.8 N 



20 42.2 N 



21 45.4 N 



8.0, 8.8 



14.4, 15.4 

 8.3, 9.2 



14.5, 15.5 



.32168 

 .31789 

 .32016 

 .31960 



9.5, 10.8 



8.9, 10.1 



9.8, 10.9 



10.1, 11.2 



15.6, 16.6 



7.7, 8.9 



13.5, 14.4 



7.0, 8.0 



16.5, 17.4 



.32141 

 .32080 

 .31977 

 .31951 

 .31920 

 .31930 

 .31954 

 .31926 

 .31922 



22 03.0 N 

 22 03.3 N 

 22 00.9 N 

 22 03.0 N 



10.0, 11.2 



15.5, 16.6 



7.7, 8.9 



13.5, 14.4 



7.2, 8.2 



7.1, 8.0 



16.5. 17.4 



.31959 

 .31911 

 .31940 

 .31945 

 .31925 

 .31936 

 .31921 



22 02.1 N 

 22 04.0 N 

 22 01.0 N 

 22 03.4 N 

 28 39.8 N 



20 03.4 N 



9.1. 10.3 

 13.3, 14.0 



.30725 

 .31988 



29 03.3 N 

 20 46.6 N 



13.4, 14.3 

 8.6, 10.2 



14.5, 15.7 



.30577 

 .31870 

 .32401 



18 20.7 N 

 25 51.1 N 



19 37.2 N 

 16 43.6 N 

 23 50.4 N 



8.9, 10.1 



9.0, 9.9 



9.3, 10.3 



8.5, 9.4 



14.4, 15.3 



.31060 

 .31948 

 .32270 

 .31253 

 .30563 



27 17.0 N 

 27 21.5 N 



12.8, 13.7 



.30600 



27 00.6 N 

 17 55.4 N 

 22 20.0 N 



8.7, 10.1 



8.8, 10.0 

 9.0 .... 



.31985 

 .31383 

 .31390 



14 43.3 N 



24 59.7 N 

 23 38.7 N 



9.8, 10.9 



9.1, 10.0 



9.2, 10.0 



.32428 

 .30854 

 .31049 



7 

 13 



20 

 13 



13 



20 

 13 

 20 

 20 



13 

 13 

 13 

 13 

 13 

 13 

 20 

 20 

 20 



20 

 20 

 20 

 20 

 20 

 20 

 20 

 20 

 13 

 13 

 13 

 13 



20 

 20 

 20 

 7 

 20 

 13 



20 

 20 

 13 



20 



7 



20 

 20 

 20 

 20 

 20 



13 

 7 



7 



202.125 



223.13 



20.12 



223.13 



223.56 



202.12 



20.12 



223.13 



20.12 



20.1 



20.6 



223.13 



223.13 



223.13 



20.126 



20.126 



223.1356 



223.1356 



223.1356 



223.1356 



20.126 



20.126 



20.12 



20.12 



202.125 

 20.126 



223.1356 

 20.12 

 20.126 



223.1356 

 20.126 



202.125 

 202.5 



20.126 



20.12 



20.126 



223.1356 



202.125 

 202.125 



WHS 



DWB 



DWB 



HES 



DWB 



DWB 



DWB 



WHS 



WHS 



HES 



DWB 



HES 



HES 



HES 



DWB 



DWB 



DWB 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



B&S 



HES 



HES 



HES 



HES 



WHS 



HES 



DWB 



DWB 



HES 



HES 



DWB 



HES 



WHS 



WHS 



WHS 



HES 



HES 



HES 



HES 



HES 



DWB 



DWB 



WHS 



WHS 



