PROBLEMS IN ASTROPHYSICS

PLATE I.

Photograph of the η Argûs Nebula. Taken by Sir David Gill in March 1892. (_Knowledge_, vol. xvi. p. 70). [_Frontispiece._ ]

PROBLEMS IN ASTROPHYSICS

BY AGNES M. CLERKE

AUTHOR OF ‘A HISTORY OF ASTRONOMY DURING THE NINETEENTH CENTURY,’ ‘THE SYSTEM OF THE STARS,’ AND OTHER WORKS

“_In solidis et veris aspiramus ad ultima et summa._” Novum Organum, ii. 51.

CONTAINING 81 ILLUSTRATIONS

LONDON ADAM & CHARLES BLACK 1903

THIS WORK IS DEDICATED

BY PERMISSION

TO

SIR DAVID GILL, K.C.B.

WHOSE SUGGESTION AND ENCOURAGEMENT PROMPTED ITS COMPOSITION AND ANIMATED ITS PROGRESS