The contents of this volume constitute observations collected by the U.S. Naval Observatory.

The contents of this volume consist of astronomical and meteorological observations made in 1880.

The contents of this volume constitute observations collected by the U.S. Naval Observatory.

The contents of this volume constitute observations collected by the U.S. Naval Observatory.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations.