28 LIGHT SCIENCE FOR LEISURE HOURS. 



sent an expedition to Aden, almost the nearest point 

 at which the eclipse will be visible as a total one. The 

 French Government sends out M. Janssen, the eminent 

 observer, at the head of a well-appointed expedition. 

 The Pope sends out Father Secchi. Mr. Pogson, the 

 superintendent of the Grovernment Observatory at 

 Madras, will also take part in the work of observing the 

 eclipse. He has been supplied by Mr. Huggins, the 

 eminent spectroscopist, with instruments for analysing 

 the light from the corona and the coloured prominences. 

 Certainly the eclipse will be well watched unless the 

 weather should unfortunately prove unfavourable. 

 Nor will observers at home be altogether idle. The 

 careful survey of the sun's disc for several days before 

 and after the great eclipse will doubtless be carefully 

 attended to by the eminent students of solar physics 

 who have charge of the Kew Observatory. Thus it 

 will be possible to determine what spots, if any, were 

 on or near the boundary of the disc at the moment of 

 totality; and the suspected association between the 

 spots and the coloured prominences will be put to a 

 satisfactory test. 



Cornhitt Magazine : August 1868. 



