
The SciencesFebruary 10, 1917
Comet 1915 (e) Taylor

Comet 1915 (e) Taylor

A Few Astronomical Events of the Past Fifty Years
What Photography and the Spectroscope have Revealed to us

The Present Appearance of some Temporary Stars
Preserving a Record for Future Observers

Photographic Observation of Comet 1911 c(Brooks)

Is there Absorbing Matter in Space?
An Examination of a Great Nebulous Region

Observations made at the Yerkes Observatory, 1902-1909

Photographing Comets
With Special Reference to Halley's Comet

Four Little Sky Travelers

Photographs of Swift's Comet