156 Scientific Intelligence. 
ner, herbarium, we un eet is in part pecacaniad 
to ier pas eee and individuals, and in part will be so 
His library, said to be very rich in other branches of natural his- 
tire. This will afford an excellent opportunity for some of our 
diltepés or other institutions. No particulars have as yet been re- 
ceived; but any institution wishing to secure a valuable library, 
such as it takes a long and devoted life. 6 form and gto ge 
address Madame Shuttleworth, at Berne, Switzerland. 
Ill. Astronomy. 
1, Polariscopie Observations oe Coggias Comet (1874, III).— 
During the greater portion of the time when the comet was favor- 
ably situated for observation, te was ddhfortuniataly hidden by 
clouds, or extinguished by t thick haze. On one or two occasions, 
however, I was able to obtain evidence that its light was polar- 
zed. The instrument e mployed was the very sensitive polariscope 
debe in the May number of this Journal. 
On the evening of July 6, although the sky was generally full 
of drifting clouds, clear intervals appeared now and then, which 
allowed a distinct view of the comet. The po ge showed 
twilight had begun to interfere with the observations. After 
waiting until this had disappeared, it was possible to see the ban ds, 
though with some difficulty, and the degree of the polarization 
appeared to be decidedly less than on the previous occasion. 
e circumstances were too unfavorable to admit of any deter- 
mination of the percentage of inal polarized, but it was certainly 
Ww 
of the sixth magnitude, except that the color at the extremities 
could not be distinguished. e spectrum of the coma consisted 
of the usual three bands of comet cere differing from them, 
Towever: in the fact that instead of bein rply terminated on 
the less refrangible side and fading cayeain as via toward the 
blue, they were Pca! bounded on both si the central 
_ band especially te ranting sharply o both eges it hy 4H 
, 
r 
