Description: Series title also at head of t.-p

Description: "Third edition, revised."

Description: At head of title: Harvard College Observatory

Supplemental catalog subcollection information: American Libraries Collection; Historical Literature; Various chapters ... were, in their original form, with the exception of chapter IX, published in Appletons' Popular science monthly. Pref

Description: Navigation at sea.--The Pleiades.--The pole-star.--Nebulæ--Temporary stars.--Galileo.--The planet of 1898.--How to make a sun-dial.--Photography in astronomy.--Time standards of the world.--Motions of the earth's pole.--Saturn's rings.--The heliometer.--Occultations.--Mounting great telescopes.--The astronomer's pole.--The moon hoax.--The sun's destination