‘ THE SOLAR ECLIPSE. Q57 
further to the east. He adduces, as worthy of remark, that in the position- 
angle 72° a large protuberance appeared in the photographing, of which he 
had seen no trace in the direct obsérvation, although the region was com- 
pletely swept over by him. 
With. regard to my own observations, (77,) (78,) of which the results will 
not be published until a later day, I remark, that I saw only the protuberances 
a, b, d, and f, at the place of the floating cloud. I noticed rays belonging to 
the corona which were not perpendicular to the moon’s limb, but were inclined 
southward. 
The description given by Mr. Mannheim (28) of the movable fringes forms 
a part of the general report made by the commission sent to Algeria by the 
Polytechnic School in Paris. We see therein that the fringes were rectilinear 
and entirely colorless, and at first following each other at distances of one 
decimeter, and afterwards at smaller distances and with greater rapidity. In 
this connexion a quotation is introduced from the report of Arago upon the 
solar eclipse of 1842, wherein the explanation is pronounced difficult and «* 
uncertain. 
Mr. Jacob (85) belonged to the British expedition which went to Spain 
under the direction of Mr. Airy for the purpose of observing the eclipse, and 
chose its station in the Pass of Pefiacenada, between Vitoria and Logrojfio. 
From the preliminary notice which he communicates respecting the pro- 
tuberances, we deduce that he saw the protuberance a, the mountain-chain 3, 
the floating cloud c, and the protuberance e at precisely the same points of the 
moon’s limb at which they appeared in southern Spain. With reference to 
the protuberance e, it is remarked that it first appeared shortly before the end 
of totality. 
I believe that in the preceding pages I have brought into notice the most 
important points from the extremely comprehensive material before us. If I 
have not more closely considered various classes of observations relating to 
special questions, such as magnetic, meteorologic, photometric observations, or 
observations of colors and lines of the prismatic spectrum, the reason is, that 
as yet no noteworthy results have been deduced from those observations, and 
- partly, also, because the questions in view, as of the absence of an influence 
_ of'the eclipse upon the barometer and the magnetic needle, might be considered 
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: 
as decided by previous investigations. 
In relation to the expeditions undertaken into Spain, I only add yet the 
remark, that they experienced on the part of the inhabitants the most friendly 
reception, and on the part of the authorities all possible support and furtherance 
in carrying out their scientific labors; and all those who participated in the 
expedition, without exception, have in the warmest terms expressed their 
acknowledgments. 
17 s 
