— 232 — 



June. Jnly. 



1893. 8, 17, 24. 6, 8, 9, 31. 



1894. 8, 27. 27. 



1895. 13, 14, 15, 20, 26. 8, lO, 19. 25. 



1896. 1, 2, 7, 11, 12, 13, 23, 24. — 



1897. 9, 10. 5, 13, 18. 

 For Cape Hoorn ') (June— July. 1883) the results for ([uiet 



days are given in the publication ''^) for that station. 



The results of the calculations for all these stations, viz. 

 the components x^, y^, z^, of daily inequality in disturbing 

 force, have been put together in Table I. 



Victordiagrams of horizontal Component. 



Dr. LüDELiNG added to his paper reproductions of veetor- 

 diagrams for the arctic stations; here are reproduced those for 

 Kimjua Fjord, Godthaah , Jan Mayen, Sodankiilri, Greenirich , 

 Tiffis, Zi Ka Wei, Batavia and Cape Hoorn, drawn after 

 snioothed components and on different scales in order to give 

 them almost the same shape. 



The characteristic features of these diagrams will be de- 

 scribed here, taking them in an order of succession determined 

 by these characteristics. 



Kingua Fjord. The vector moves clockwise throughout 

 the day with only small change in magnitude. 



Godthaab. From 3''a till 3i'p the vector moves anti- 

 clockwise and clockwise during the rest of the day; it vanishes 

 as the direction of rotation changes. The vectordiagram has 

 the ferm of a cracknel. 



Cape Thordsen. The diagram for this station may be 

 considered to be derived froni that of the preceding station 

 of Godthaab by turning round the afternoon part in which the 

 vector rotates clockwise. 



At l''a and 4i'p the vector iiearly vanishes, but the rotation 

 is anticlockwise for the whole day. 



1) "Hoorn" is the tine oiiginal spelling'. 



2) Mission Scientijique du Cap Hom, 1882 — 1883, T. III. 



