ASTRONOMICAL OBSERVATORIES.

433

lites, one by Beichenbach, two by Meyerstein; sextants by Cary,Troughton, Pistor, Steiniieil, and Breithaupt ; two heliotropesby Meyerstein.

Graz, Austria .

I. Fhysikalisches Institut der If. K. Carl Franzens Universitdt.

Longitude from Greenwich, -.

Latitude, -.

Director: Prof. Dr. Ludwig Boltzmann.

II . Universitdts Sternicarte.

Longitude from Greenwich , l 11 l m 47.9 s E.

Latitude, 47° 4' 37.2" K

Authority for longitude and latitude: A. Lancaster, Liste Generatedes Observatoires et Astronomes, 1387.

Director: Dr. 0. Friesach .

III. Private Sternicarte.

Longitude from Greenwich , —--.

Latitude, -.

Director : E. Mathey Guenet.

Greenwich , England.

Royal Observatory.

Longitude from Washington, 5 h 8 m 12.09 s E.

Latitude , 51° 28' 38.4" N.

Authority for longitude and latitude: Nautical Almanac, GreenwichObservations, 1878.

Directors: J. Flamsteed , 1675»iE. Halley , 1720.

J. Bradley, 1742.

NT. Bliss, 1762.

K Maskelyne, 1765.

J. Pond, 1811.

G. B. Airy (Astronomer Itoyal ), 1835.

W. H. M. Christie (Astronomer Koyal ), 1881.

Founded by royal statute on the 4th March, 1675. Built in the parkat Greenwich by Christopher Wren, architect . At first it consistedmerely of an octagonal tower. In 1660 Flamsteed put up an additionalwing to accommodate the mural sector, with the help of which he madehis catalogue of stars. The board of visitors was created in 1710. In1749 and the years immediately following great improvements andadditions were made.

II. Mis. 170-28