CONTENTS 
PAGE 
I 
1820-1830, by H. H. Turner . 
1830-1840, by J. L. E. Dreyer ...... 50 
1840-1850, by R. A. Sampson ....... 82 
1850-1860, by E. H. Grove-Hills . . . . . .110 
1860-1870, by H. F. Newall ....... 129 
1870-1880, by H. P. Hollis ....... 167 
1880-1920, by J. L. E. Dreyer ...... 212 
Index ........... 254 
LIST OF ILLUSTRATIONS 
Rev. W. Pearson 
S ir J. Herschel 
J. J. Waterston 
S ir J. South 
FrANT!TK Ratt.v - 
J. C. Adams 
Rev. R. Sheepshanks 
A. De Morgan . 
Sir W. Huggins 
Adm. W. H. Smyth . 
Sir G. B. Airy . 
Colonel E. H. Grove-Hills 
Frontispiece 
to face p. 8 
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>> i) 246