240 



The Eclipse of Last December. 



[April, 



happens fortunately that, notwithstanding the unfavourable 

 weather generally experienced, the evidence on this point is 

 unmistakable. 



In the first place, we have the evidence respecting the 

 corona as seen at other Spanish stations. I extract: the fol- 

 lowing account from a paper in the " English Mechanic," 

 for January 27th, 1871, which, though anonymous, shows 

 obvious signs of having been written by a practised mathe- 

 matician and a well-informed physicist. I note, also, that 

 the account accords exactly with statements addressed to 

 the January meeting of the Royal Astronomical Society, 



Fig. 9. 



The Corona as drawn by Lieut. Brown. 

 R, R' the outer radiated corona. 

 I, I' the inner and brighter corona. 



and with accounts I have received from different members of 

 the expedition: — "The corona proper, or glory, or radiated 

 corona — as it is variously called, extended a distance of 

 almost the moon's diameter from the moon's limb, but not 

 equally in every direction. It had a greater extension in 

 four directions, at the extremities of two diameters at right 

 angles, so as to give it the shape, roughly speaking, of 

 a square with rounded corners. It was broken in parts, and 

 notably by one decided V-shaped gap. This was observed 

 not only by one party, but at three stations, San Antonio, 

 Xeres, and La Maria Louisa, which form a triangle each of 

 whose sides is five or six miles in length." Mr. Hudson, 



