— 242 — 



A map of the earth has been constructetl after Mercator's 

 projection, not with the axis of rotation as chief axis, but 

 with regard to the axis of disturbance. The great circle 

 passing- through the pole of disturbance and the place, where 

 the sun stands in the zenith at (ireenirich mean noon of 

 July P*, lias been chosen as middle-or zero-meridian. 



The place occupied in this projection by the other stations 

 selected has beeji computed to be: 



The components x^ and y^ computed for this new system 

 of coürdinates froni the smoothed values of x^ and y^ , are 

 tabulated in Table 3. The deviation of the new north, 

 the north of disturbance, from the geographical north 

 amounts at Kinyua Fjord to '.)° W 



Jan Mayen 35 W 



Sodanl-yld 24 W 



Greenivich 18 W 



Tifis IIV2 W 



Zi Ka Wei 6 E 



Batavia 1 E 



Cape Hoorn 2 W 



The vector-diagTams reproduced in the plate ai-e constructed 

 by means of these components x|^ and y^ 



For reference the geographical N, E, S and W directions 

 have been added. 



In the map the value of the vertical component z^ as well 

 as the horizontal vector (x^, y^) at 12'' m. t. of Greenivich 



