MISSOURI BOTANICAL GARDEN BULLETIN 173 
being very loosely constructed, and as we watched it from 
time to time we were fearful that the nest would fall apart 
before the young were old enough to leave it. When first 
noted it was of normal size and contained one cowbird egg 
which in a few days was covered by a small piece of paper. 
The second foreign egg was laid at a slightly higher level. 
Then the warbler began to work in earnest, rapidly build- 
ing a thick false bottom to her nest and raising the walls. 
Subsequently she laid four eggs and brought off a brood of 
three warblers, one of the eggs evidently being infertile. The 
accompanying photograph shows the size and construction 
of the nest, which has been opened sufficiently to show both 
of the unhatched cowbird eggs.” 
NOTES 
The fourth number of Volume IV of the Annals of the 
Missouri Botanical Garden has been issued with the follow- 
ing contents: 
“Two Exotic Compositae in North America.” J. M. Green- 
man. 
“Algological Notes. II. Preliminary List of Algae in 
Devils Lake, North Dakota,” G. T. Moore. 
‘“Merulius in North America.” E. A. Burt. 
Dr. Mary S. Young, of the University of Texas, is spend- 
ing several weeks in the herbarium working over her collec- 
tion of Texas plants. 
Mr. Edwin B. Payson, until recently Teaching Fellow in 
Botany, has entered the army service, and has been assigned 
to the Officers’ Reserve Camp at Fort Riley, Kansas. 
The public lecture at Washington University, November 
26, was delivered by Dr. George T. Moore, Director of the 
Garden, the subject of his address being “The Evolutionary 
Consequences of the War.” 
Mr, George H. Pring, in charge of conservatories, at- 
tended the meetings of the National Gardeners’ Association 
at Chicago, December 5-7, and gave an illustrated lecture 
on “The Botanic Gardens, Kew, England.” 
A paper on “Aquatic Gardens” by Mr. George H. Pring, 
in charge of conservatories, was sent to the Missouri State 
Horticultural Society at their convention in Kansas City, 
where it was read by the president, December 12. 
As a result of the competitive examinations held in Sep- 
tember, scholarships in the School for Gardening have been 
