PART 11. POLAR MAGNETIC PHENOMENA AND TERRELLA EXPERIMENTS. CHAP. I. 



357 



The last phase of the perturbation, as will immediately be seen, is just what we have previously 

 designated as a negative polar elementary storm, with the storm-centre in the north of Europe, a storm 

 such as we have again and again met with in Part I. In these storms, we have learnt to understand how 

 they are a link in a long chain of perturbations, which, it appears, steadily develope in the course of 

 the day, in more or less the same manner. In the succeeding pages, we shall see how confirmation of 

 this will actually be obtained. 



TABLE LIU. 

 The Perturbations of the ist November, 1882. 



TABLE LIII (continued). 



Kirkelnnd. The Norwi-gian Aurora Polaris Kxpeclition, 1902-1903. 



