226 Neientifie Intelligence. 
Ii Asrronomy. 
1. Eclipse of the Sun, Dee. 1871.—Extract of a letter of 
Dr. Janssen to Prof. New TON, ag boy! Sholoor, Nilgherry, Dee. 
26th, 1871.—I have the honor to send you the results of my 
part. 
i m dicho * the spectrum of the corona does not _— a 
continuous, but is remarkably complex. I have found in 
I. The bright rays of hydrogen gas, which ime the pana 
element of the protuberances and the chromosphe ; 
IL. The bright green ray, previously remarked i in ee eclipses of 
1869 and eg and certain other fainter o 
ark rays of the ordinary joine; specs tis particularly 
D. “These rays are much more difficult to detect 
My observations prove that, ea eee of the cosmical mat- 
ter vhich should be found n the sun, there exists, about this 
body, an atmosphere of great oxen araendissy rare, and witha 
hydrogen base. This atmosphere, which, doubtless, fom the 
last gaseous envelope of the sun, is fed from the matter 0 of the 
temperature, and perhaps the presence of fo 
reason then for distinguishing this new 8° 
atmosphere. I propose to call it the coronal atmosphere, 2 name 
which indicates that it is this atmosphere which produces the large 
part of the phenomena hitherto denoted by the name solar coront. 
In announcing this result, I do not, on my part, forget aie 
much we are indebted to the labors of those who have prepare 
the way for it, especially to the labors of the American astron® 
mers who observed the eclipses of 1869 and 1870. will 
I do not soak that the observations of others this year 
agree with min ie 
<. sit the Solar -_Hiclipse of December 12, 1871; by J. pees 
Locxy As the mail, the first available one after t 
eclipse, ma this place to-day, I must lose no more time 10 
cording preliminaries. I will therefore at once state the ee 
arrangements of the parties, and what I at present know of 
observations. The stations and observers as finally arranged wel? 
as follows :— | 
Bekul—Analysing Spectroscope, Capt. Maclear oe ii Pring’® 
renal iu Dr. Thomson. Photography, Mr. D aa 
Manantod ie Anslvning Spectroscope, Are vise } Integra 6 
Lameaai Mr. Abbay. iy 
*This te’ has an openin nd a focal pea of om 
1=-42. The apes of object rag ieee ae ‘bright as in ap ordinary rg 
* nomical telescope. ‘oscope was so constructed sits wae this light. 
