THOSE

THE ECLIPE OF GENT

PHOTO BERANS

Bπ & GILMAN

who observe to war och teles cope will no: soo forget the appearance of the arge oval the moon. We were unusual station near Sioux City, low stated that our observations fractor-one of Mr. Alvos.. that the details about to &»The "anvil" protal my notes, was seen by an the totality.

Several month expect the more house sphere, and han especially f near the

shaped brillian sidera invisi

J

NP

August 9, 1869.

tance we have the faculous ridges marked
be referred to prominences 4, 5, 6, and 7
agram. It is worthy of special notice that the
it I are very irregularly disposed, the tortuous
parts suggesting whirling motions in the photo-
Mayer's "Eagle" prominence is a fit object to
ich a curiously-agitated portion of the solar surface.
etch gives a correct representation of the windings of
es of faculæ I feel quite confident. While making the
on the outline was likened to a rude drawing of a camel
.). The resemblance may appear to some if the page is
ed, the camel being supposed to face to the left.
ig. 5 is a copy of my sketch of the spots on the sun's disc, as
"ppeared an hour previous to the eclipse. There was little or

re in their form or position until after the close of the
n. The large spot near the eastern limb, enveloped
m of faculæ, is the same as that visible on the
r the same locality.

12. Burton-on-Trent; its William Molyneux.

13. The Fuel of the Sun.

14. Burton and its Bitte

15. A Star Atlas for &c. With Tr

Drawn by Ric"

16. On the Manufa By William Cr

РА

On the Thermal I
On Ocean Curre
Records of the G
Notes of Fifte

Professor G

Descriptive C

bited at tl

Notes on Di

U.S.A., N

Report pres Vaccina by Geor

on

CI

L

A

THE QUARTERLY

NAL OF SCIENCE.

OCTOBER, 1870.

ECLIPSE OF AUGUST 7, 1869.-" ANVIL"
PROTUBERANCE.

By W. S. GILMAN, jun., New York.

observed the solar eclipse of last August with a sizeable ill not soon forget the startling effect produced by the of the large oval protuberance on the western limb of We were unusually favoured as to atmosphere at our ar Sioux City, Iowa, and when in addition to this it is it our observations were made by the aid of a 4-inch reone of Mr. Alvan Clark's best-it will not seem strange details about to be recorded were so readily obtained. "anvil" protuberance, for such the object is recorded in 3, was seen by one of our party several moments prior to lity.

ral months' study of the sun's surface had prepared me to the more remarkable protuberances in the southern hemiand having selected the south-western quadrant as an lly favourable locality, from the presence of faculous ridges he limb two days prior to the eclipse, the bright “anvil”1 mass instantly attracted my attention. Its extraordinary ncy enabled me afterwards to keep it in view when a conble crescent of the reappearing sun had rendered the corona ible.

A hasty glance at other portions of the moon's limb satisfied that the "anvil" protuberance possessed greater interest than other, and I therefore devoted my whole time to its considera1, except so much as was employed in obtaining several outline tches of the corona.

In a forecast of the probable positions of protuberances, which made on August 5 (see Fig. 1), the double prominence at A cupies very nearly the position of the object under discussion. In ig. 2 we have the appearance of the sun's disc on the same day, nd near that part of the limb subsequently occupied by the anvil," we notice a cluster of bright faculous spots. It was the

VOL. VII.

2 H

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