1891. ] NEW YORK ACADEMY OF SCIENCES, 99 
Bestammandet af en Planets massa medelst iakttagelser af satelliternas 
indbérdes lagen. Af O. Backlund (Proc. R. Swedish Acad., 1882), 
III., 51. 
Bestimmung des Masse des Planeten Jupiter aus Heliometer Beobach- 
tungen der Abstiénde seiner Satelliten. Von Dr. W. Schur (Nova 
Acta der Leop. Carol. Acad., Band XLV., Halle, 1882). 
Logarithmisch-trigonometrisches Handbuch auf fiinf Decimalen bear- 
beitet von E. Becker. Leipzig, 1882. 
Observations of the Transit of Venus, made at the Washburn Observa- 
tory, Madison, Wisconsin, 1882, December 5-6, By E. 8S. Holden 
(Amer, Journal, 1883). 
Madeira Spectroscopic, being a Revision of 21 places in the Red Half 
of the Solar Visible Spectrum with a Rutherford Diffraction Grat- 
ing at Madeira during the Summer of 1881. By C. Piazzi Smyth 
(Edinburgh, 1882). 
The illustrated Account given by Hevelius in his ‘‘ Machina Celestis” 
of the Method of mounting his Telescopes and erecting an Obser- 
vatory. Reprinted from an original copy, with some Remarks. By 
C. Leeson Prince (1882). 
Neue Reduction der Bradley’schen Beobachtungen aus den Jahren 1750 
bis 1762. Von Arthur Auwers. Zweiter Band (St. Petersburg, 1882), 
Thirty-seventh Annual Report of the Director of the Astronomical Ob- 
servatory of Harvard College. By E, C. Pickering. 
Mémoire sur la Grande Cométe australe du mois de Février 1880. Par 
M. Wilhelm Meyer (Mém. de la Soc. de Physique de Genéve, T. 
SV EET): 
EDS ta. 
Monograph of the central Parts of the Nebula of Orion. By Edward S. 
Holden (Wash. Obs. for 1878, App. I.). 
Publications of the Washburn Observatory of the University of Wis- 
consin, Vol. I. (Madison, 1882). 
LE, 10s, 
Untersuchungen iiber die Pracessionsconstante auf Grund der Stern- 
cataloge von Lalande und Schjellerup. Inaugural-Dissertation von 
F. Bolte. Bonn, 1883. 
1) Tear 
Resultate aus den in Pulkowa angestellten Vergleichungen von Pro- 
cyon mit benachbarten Sternen. Von Ludwig Struve. St. Peters- 
burg, 1883. 
III., 145, 
Publicationen des astrophysikalischen Observatoriums zu Potsdam, 
Dritter Band. Potsdam, 1883. 
III., 185. 
L’ Aberration des Etoiles fixes. Par Magnus Nyrén (Mém, de I’Acad, Imp, 
de St. Pétersbourg, 1883), 
‘The Parallax of « Lyrw and 61 Cygni. By Asaph Hall (Wash. Obs., 
1879, App. I.). Ag 
