The New Dearborn Observatory.— lo min.— By G. W. Hough. 
Astronomical Observations made with the Great Telescope of 
the Lick Observatory since June, 1888.— 25 min.— By Edward S. 
Holden. 
A Desideratum in the Presentation of Mathematical Truth.— 5 min 
—By Charles H. Chandler. 
Automatic Photographic Transits.— 15 min.— By Frank H. Bigelow 
A Method of Finding Factors. — 10 min. — By James D. Warner. 
On the Graduation of Meridian Circles m j/Vz/.-io min.— By Wm 
On the Use of a Floating Mirror as an Auxiliary to a Meridian Cir- 
cle.— 12 min.— By G. C. Com^tock. 
The Relation Between Stellar Magnitudes, Distances, and Motions, 
—15 min.— By J. R. Eastman. 
On the Proper Motions of the Stars in the Harvard College Observa- 
tory Zone, between the limits 50° and 55° Declination.— 8 min.— 
By Wm. A. Rogers. 
Formula for the Probability of any Fact or Occurrence about which 
any Number of Witnesses Testify.— 10 min.— By J. E. Hendrick. 
On the Solar Parallax and its related Constants.— 30 min.— By Wm. 
Harkness. 
Double Star Discoveries and Measures made at the Lick Observa- 
tory, August ist, 1888, to August ist, 1889.— 10 min.— By D. W. 
A proposed Catalogue of Declinations.— 45 min.— By Henry Far- 
The Solar Corona, a phenomenon in Spherical Harmonics.— 5 min. 
—By Frank H. Bigelow. 
On the Automatic Eclipsograph.— 15 min.— By David P. Todd. 
Errors in Star Catalogues.— 15 min.— By E. Frisby. 
I^he Peruvian Arc— 30 min.— By E. D. Preston. 
New Arrangement for an Astigmatic Eye-piece. — 3 min. — By J. A. 
Brashear, 
The Jena Optical Glass.— 5 min.— By J. A. Brashear. 
The Centrifugal Catenary.— 15 min.— By J. Burkitt Webb, 
The Polar Tractrix.— 10 rain.— By J. Burkitt Webb. 
A Precession Model— 10 min.— By J. Burkitt Webb. 
The Hastings Achromatic Objective.— 5 min.— By J. A. Brashear. 
Annual Parallax of South 503.— 4 min.— By F. P. Leavenworth. 
