252 Notices of Books. (April, 
figures of the prominences can be studied whenever the sun is 
visible, to Zollner and Huggins, who independently enunciated 
the method—Huggins accompanying his paper with an account 
of the first successful observation of a prominence by this me- 
thod. ‘The coloured illustrations of this part of the subject are 
very beautiful, and add largely to the value of the treatise. They 
include views by Zollner, Respighi, and Young, the coloured 
views by the two Jast-named observers being now published in 
Fic. 19. 
Gould’s Drawing of the Corona, August 7, 1869. (4h. 58m.) 
England for the first time we believe. The accompanying 
ficure 2s (17 and 18), though instructive, afford but a faint idea of the 
weird Beauty of the enlarged coloured drawings of particular 
prominences 
In dealing with the corona (a subject which he somewhat 
unhappily intermixes with the treatment of the prominences) 
Schellen merely sums up without submitting to analysis the 
evidence which had reached him. Accordingly he arrives at no 
definite conclusion on the question whether the corona is a solar 
