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POPULAR SCIENCE REVIEW. 
Lockyer, assisted by Mrs. Lockyer, a second ; Mr. Seabroke, 
assisted by Mr. Burton, a third ; and Mr. Pedlar a fourth. 
Messrs. Ranyard, Griffith, and Clifford will superintend the 
polariscopic observations ; Messrs. Brett and Darwin will make 
sketches of the corona ; while Messrs. Vignolles, father and 
son, will superintend the chronometric arrangements, and make 
general observations. But, probably, the most important work 
done at this station — if the weather is favourable — will be that 
superintended by Mr. Brothers, one of our most skilful photo- 
graphers. Assisted by Dr. Vogel and Mr. Fryer, he hopes to ob- 
tain two series of views, one by means of one of the Sheepshanks’ 
equatorials, belonging to the Royal Astronomical Society ; the 
other by means of a photographic camera of his own. 
I have kept to the last the strongest party of all ; that, 
namely, which, under the charge of Dr. Huggins, proceeds to 
Oran, in Algeria. Here the duration of totality will be only 
three seconds less than the actual maximum. The name of 
Dr. Huggins is alone a guarantee that the spectroscopic study 
of the corona will not only be conducted skilfully, but with a 
most careful reference to strict scientific principles. He is in 
alliance, however, with other eminent physicists. Professor 
Tyndall and Dr. Gladstone are with him. Mr. Crookes joins 
in the spectroscopic work. Captain Noble and the Rev. F. 
Howlett will see that proper portions of the corona are brought 
upon the slit, while these two practised observers will have at 
the same time the opportunity of viewing the image of the 
corona on the screen in which the slit is made. This screen is 
eovered with rectangular cross-lines, and the true shape of the 
corona will thus admit of being very readily noted. All the 
arrangements for viewing the spectrum of the corona and re- 
cording the place of any lines which may appear have been 
superintended by Dr. Huggins, at whose house I had the plea- 
sure of inspecting them thoroughly. I cannot doubt that the 
actual observations — to be made severally by Dr. Gladstone 
and Mr. Crookes — will be successful, if the weather only be 
favourable. Dr. Huggins himself — after seeing before totality 
begins that the adjustments are properly made — will devote 
his attention to the telescopic study of the corona. I have 
dwelt so much on the importance of keeping the eyes in dark- 
ness for a few minutes, at least, before totality begins, that I 
need hardly remark how well pleased I have been to find that 
so eminent a physicist and so skilful an observer intends to adopt 
this precaution. I attach very great importance to this fea- 
ture of Dr. Huggins’s plan ; since very little could, I think, 
have been expected from the mere renewal during this eclipse 
of observations which have been made repeatedly during former 
eclipses of greater extent and importance. 
