No. 128. Studies on the Rocky Mountain Flora— XIX, 

 by Per Axel Rydberg. 



North American Flora 



This work, designed to include descriptions of all known 

 plants native to North America, Central America and the 

 West Indies, is being issued in parts at irregular intervals 

 as rapidly as these parts can be prepared. 



Volume 17, part 1, containing descriptions of the Family 

 Typhaceae by Percy Wilson, the Sparganiaceae, Elodeaceae 

 and Hydrocharitaceae by P. A. Rydberg, the Zannichel- 

 liaceae, Zosteraceae and Cymodoceaceae, Naiadaceae and 

 Liliaceae by Norman Taylor, the Scheuchzeriaceae by 

 N. L. Britton, the Alismaceae by J. K. Small and the Buto- 

 maceae and Poaceae (pars) by G. V. Nash, was issued June 

 30,1909. 



Volume 16, part 1, containing descriptions of the Family 

 Ophioglossaceae by L. M. Underwood and R. C. Benedict, 

 the Marattiaceae by L. M. Underwood, the Osmundaceae 

 and Ceratopteridaceae by R. C. Benedict, and the Schizae- 

 aceae, Gleicheniaceae, and Cyatheaceae (pars) by W. R. 

 Maxon, was issued November 6, 1909. 



Memoir 



Volume III. Studies of Cretaceous Coniferous Remains 

 from Kreischerville, New York, by Dr. Arthur Hollick and 

 Dr. Edward Charles Jeffrey, viii + 138 pp., with 29 plates, 

 was issued May 20, 1909. 



Lectures 

 Public Lectures 



Two courses of illustrated public lectures on botanical 

 subjects have been given in the museum building on Satur- 

 day afternoons, as follows: 



April 24. "A Winter in Jamaica," by Dr. W. A Murrill. 



May 1. "Spring Flowers," by Dr. N. L. Britton. 



May 8. "How Plants Grow," by Dr. H. M. Richards. 



May 15. "Evergreens: How to Know and Cultivate 

 Them," by G. V. Nash. 



