(19 ) 
and accounts of the explorations which are now being prose- 
cuted so vigorously. 
Buuuetin No. 11, issued April 14, 1905, comprises 175 
pages with 7 figures and 22 plates, completing Vol. III. 
The papers included have been published separately in ad- 
vance. The first, Mycological Studies, I], by Professor F. 
S. Earle, was issued June 30, 1904; the second, The Com- 
parative Embryology of the Cucurbitaceae, by J. E. Kirk- 
wood, was issued October 7, 1904; the third, Additions to the 
Palaeobotany of the Cretaceous Formation of Long Island, 
No. II, by Dr. Arthur Hollick, was issued December 10, 
1904; Additions to the Flora of Sub-tropical Florida, by J. 
K. Small, was issued January 27, 1905; and Contributions 
to the Flora of the Bahama Islands, I, by Dr. N. L. Britton, 
February 7, 1905. The table of contents and index to Vol. 
III were issued with this number. 
BuLuETIN No. 12, containing the reports of the Director- 
in-Chief, Assistant Director, Curator of the Museums and 
Herbarium, Honorory Curator of the Economic Collections, 
Librarian, Head Gardener, Superintendent of Buildings and 
Grounds, Scientific Directors, Committee on patrons, fel- 
lows and members, and Treasurer, was issued May 8, 1905. 
This number is the first of Vol. IV and contains 113 pages. 
Of Buiierin No. 13, a single paper, Contributions to the 
Flora of the Bahama Islands, II, by Dr. N. L. Britton, was 
issued separately in advance, August 24, E905. 
ConTRIBUTIONS as follows have been reprinted from vari- 
ous periodicals during the year: 
No. 62. Studies on the Rocky Mountain Flora — XIII, 
by Per Axel Rydberg. 
No. 63. Chemical Stimulation of a Green Alga, by Bur- 
ton Edward Livingston. 
No. 64. The Occurrence and Origin of Amber in the 
Eastern United States, by Arthur Hollick. 
No. 65. The Polyporaceae of North America — X, Agar- 
tcus, Lenzites, Cerrena and favolus, by William A. Murrill. 
No. 66. Studies on the Rocky Mountain Flora— XIV, 
by Per Axel Rydberg. 
