(242 ) 
Determinations and studies of the Asclepiadaceae have 
been continued. Some assistance has been rendered to Dr. 
D. T. MacDougal, the Director of Botanical Research in the 
Carnegie Institution of Washington, in the making of records 
of the cultures of evening-primroses maintained by him in the 
experimental grounds and in the collaboration with him and 
Dr. G. H. Shull, of the Station for Experimental Evolution 
of the Carnegie Institution of Washington, in the preparation 
for the press of the results of the experiments undertaken at 
the Garden in 1905-6 in a paper entitled ‘* Mutations, Vari- 
ations and Relationships of the Oenotheras,” to be published 
by the Carnegie Institution of Washington. A monograph 
of Zygophyllaceae has been prepared for publication in the 
Nortu AMERICAN FLORA. 
Respectfully submitted, 
NNA MuRRAY VAIL, 
Ltbrarian. 
List oF PERIODICALS. 
* Académie Internationale de Géographie Botanique, Le Mans 
France. Bulletin. 
eee Eapetineet Sac seit Ala. 
uskegee, Ala. 
tt ee ‘ Uniontown, Ala. 
- ‘t ‘ Tucson, Ariz. 
a te se oe Ark. 
*s ee tt erkeley, 
. ‘ es Fort Collins, Colo. 
ut “6 66 New Haven, Conn 
7 “ ‘6 Storrs, Conn 
ef at ae Newark, Del 
a - +t Lake City, Fla 
“ - Experiment, Ga. 
* Periodicals subscribed for by the Garden. 
t Periodicals subscribed for by Columbia University and deposited at the 
Garden 
{ Periodicals received in exchange by the Torrey Botanical Club and de- 
posited at the Garden. 
All others are received in exchange by the Garden. 
