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Dr. H. M. Richards, adjunct professor of botany in Bar- 
nard College, Columbia University, has completed his inves- 
tigations upon the influence of wounding on turgidity and is 
carrying forward some work upon the influence of carbon 
monoxide, illuminating gases and other gases upon plants, 
in codperation with Dr. D. T. MacDougal. 
Dr. Tracy E. Hazen, tutor in botany, Barnard College, 
Columbia University, has continued his work on the Conferve 
of North America. The results of his earlier studies have 
been published in the Memozrs of the Torrey Botanical 
Club, Volume 11. , 
Miss Ada Watterson, assistant in botany, Teachers Col- 
lege, Columbia University, has continued her observations 
on the effect of chemical irritants on the respiration of fungi, 
and has also carried forward some investigations on the cytol- 
ogy of hybrids. 
Dr. E. S. Burgess, professor of biology, Normal Col- 
lege, has continued his investigations of the asters. The 
bibliography of the subject was published as Vol. 10 of the 
Memoirs of the Torrey Botanical Club. The systematic 
treatment of the group, including a number of new illustra- 
tions, has been brought to an advanced stage of preparation. 
Investigations at other Institutions. 
By means of the appropriation made for this purpose, Pro- 
fessor L. M. Underwood, Chairman of the Board of Scien- 
tific Directors, visited during the summer, many of the larger 
botanical establishments in Europe for the purpose of prosecut- 
ing his studies on the ferns of tropical America, and while 
engaged in this work, secured a large number of specimens 
for our collections, and some books for the library, by mak- 
ing exchanges with the gardens and museums visited by him. 
Miss Anna M. Vail, librarian, took advantage of the op- 
portunity while in France in the spring, for the purpose of 
attending the sale of the botanical library of the late Pro- 
fessor Jordan, of visiting the botanical establishments in Paris, 
and made a trip to Holland and Belgium. Through this 
