CONTENTS. 



Part I. — Catalogues. 



Page 

 I. CATALOGUES AND WEIGHTS. 



Introduction 343 



List of Catalogues 344 



Weights 350 



II. METHOD OF REDUCTION. 



Precession 352 



Proper Motion 354 



Systematic Corrections 357 



FormulEE for Adjustment 362 



III. TABLES AND RESULTS. 



Star-Tables 367 



Catalogue of Result 394 



Part II. — Photographs. 



I. THE PLATES: DESCRIPTION AND MEASUREMENT. 



Description 398 



M easuremen t 400 



II. INSTRUMENTAL CORRECTIONS 



Division Errors 421 



Corrections for Runs and Screw Errors 422 . 



Measured Coordinates and Rotation Errors 427 



Scale-value Corrections, Projection Errors, and Deviation of the Cylinder 

 from Straightness , 429 



III. METHOD OF REDUCTION. 



Transformation Corrections 438 



Refraction Corrections 444 



Precession , Nutation and Aberration ; 448 



Constants of the Plates 449 



IV. RESULTS. 



Constants 456 



True Scale-Value 459 



Separate Results 461 



Catalogue of Results 476 



(2) 



