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NortH AMERICAN FLorA 
Volume 7, part 3, containing descriptions of the Aecidi- 
aceae (continuatio), by J. C. Arthur, was issued April 15, 
IgI2. 
Volume 17, part 2, containing descriptions of the Poaceae 
(pars), by G. V. Nash, was issued September 18, 1912. 
Lectures 
Pusuiic Lectures 
Illustrated public lectures on botanical subjects have been 
given in the museum building on Saturday afternoons from 
April to the middle of December, as outlined below. The 
total attendance for the year has been 3,521, averaging 103 
for each of the 34 lectures. 
April 27. “Date Gardens of the Sahara Desert,” by 
Mr. T. H. Kearney. 
May 4. “The Preservation of Our Native Plants,” by 
Dr. N. L. Britton. 
May 11. “The Deserts and Mountains of Southern 
Arizona,” by Professor H. M. Richards. 
ay 18. “‘Botanizing in the Region of the Natural 
Bridges, Utah,” by Dr. P. A. Rydberg. 
May 25. “Some of the Plants that Live in the Sea,” 
June 1. “Condiments and Spices and Their Sources,” 
by Dr. H. H. Rusby. 
June 8. “Orchids,” by Mr. G. V. Nash. 
June rs. “Four Weeks in Western Cuba,” by Dr. C. S. 
Gager. 
June 22. “Poisonous Plants of Our Woodlands,” by 
Mr. Norman Taylor. 
June 29. “Exploring the Pacific Coast—I. New York 
to Seattle,” by Dr. W. A. Murrill. 
July 6. “The Botanical Exploration of Cuba,” by Dr. 
N. L. Britton. 
July 13. “Aquatic Flowering Plants,” by Dr. John H. 
Barnhart. 
