(52) 
handsome set of Rees’ Cyclopaedia has been received from 
the Director of the Royal Gardens at Kew. 
Additional exchanges have been arranged with other insti- 
tutions, and the number of journals, periodicals and reports 
now received in that way in exchange for Garden publications 
is about 455 as against 305 during 1903. 
A number of duplicate books and pamphlets have been dis- 
posed of either by exchange or sale. 
Accessions to the library, other than serials and regular 
exchanges, have been published monthly in the Journal. 
Besides the regular administration of the library, deter- 
minations and studies of the Asclepiadaceae have been con- 
tinued, some of the results of which have been published in 
Contribution No. 57, under the title of ‘‘ Studies in the As- 
clepiadaceae—VIII.” I have also participated in the studies 
of the origin of species by mutation and of hybridization as 
demonstrated in the genus Ocnothera, which have been in 
sults of which are to be published by the Carnegie Institution 
of Washington. This work is still in progress. I have also 
assisted in the preparation for the press of Professor Hugo. 
de Vries’ lectures, ‘‘ Species and Varieties: Their Origin by 
Mutation,” now in press, and to be published by the Open 
Court Co 
Respectfully submitted, 
Anna Murray Val, 
Librarian. 
List oF PERIODICALS 
* Académie Internationale de Géographie Botanique, Le Mans,, 
France. Bulletin. 
* 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 i in exchange by the Garden, 
