and in recognition of his great worth as a man and as an astronomer, the plates for this volume have been provided by

MR. WILLIAM ALVORD, MR. F. M. SMITH,
MR. ROBERT BRUCE, MISS JENNIE SMITH,
MR. WILLIAM H. CROCKER, MISS MATILDA H. SMITH,
MRS. WILLIAM H. CROCKER, MR. BENJAMIN THAW,
MR. E. J. DE SABLA, MRS. WILLIAM THAW,
MR. J. A. DONOHOE, MR. ROBERT J. TOBIN,
MRS. PHŒBE A. HEARST, THE UNIVERSITY OF CALIFORNIA,
MR. JOHN B. JACKSON, THE STATE OF CALIFORNIA.
MR. E. J. MOLERA,

ORGANIZATION OF THE LICK OBSERVATORY.

Hon. Charles W. Slack, Hon. Warren R. Porter,
Hon. William H. Crocker, Rev. Peter C. Yorke,
Committee of the Regents for the Lick Observatory.
Benjamin Ide Wheeler, President of the University.
W. W. Campbell, Director and Astronomer.
R. H. Tucker,* Astronomer.
C. D. Perrine, Astronomer.
H. D. Curtis, Mills Acting Astronomer.
R. G. Aitken, Astronomer.
W. H. Wright, Astronomer.
J. H. Moore, Assistant Astronomer.
Sebastian Albrecht, Assistant Astronomer.
Miss A. M. Hobe, Carnegie Assistant.
G. F. Paddock, Mills Assistant.
Miss L. B. Allen, Carnegie Assistant.
E. A. Fath, Fellow.
J. C. Duncan, Fellow.
Miss A. E. Glancy, Fellow.
Miss M. E. French,* Secretary.
Miss A. J. Van Coover, Secretary.
* Absent on leave.

PHOTOGRAPHS OF NEBULÆ AND CLUSTERS,