MISSOURI BOTANICAL GARDEN BULLETIN 19 
Overholts, L. O. “Comparative Studies in the Polypo- 
raceae.’ Ann. Mo. Bot. Gard., No. 4, 1915. 
Overholts, L. O. “The Polyporaceae of the Middle- 
age United States.” Washington University Studies, 
von Schrenk, Hermann. “A Specification for a Coal Tar 
Creosote Solution.” Proc. Am. Wood Pres. Assn., 1915. 
von Schrenk, Hermann. ‘Modern Uses of Wood.” Jour. 
West. Soc. of Engineers, 1915. 
Studhalter, R. A., and Heald, F. D. ‘The Persistence of 
Viable Pycnospores of the Chestnut-blight Fungus on 
Normal Bark below Lesions.” Am. Jour. Bot., 1915. 
Studhalter, R. A., and Ruggles, A. G. ‘Insects as Car- 
riers of the Chestnut-blight Fungus.” Pa. Dept. Forestry 
Bull., 1915. 
Studhalter, R. A. (with Heald, F. D.) “The Effect of 
Continued Desiccation on the Expulsion of Ascospores of 
Endothia parasitica.” Mycologia, 1915. 
Studhalter, R. A. (with Heald, F. D.) “Longevity of 
Pyenospores and Ascospores of Endothia parasitica under 
Artificial Conditions.” Phytopathology, 1915. 
Studhalter, R. A. (with Heald, F. D., and Gardner, M. 
W.) ‘Air and Wind Dissemination of Ascospores of the 
Chestnut-blight Fungus.” Jour. Agr. Res., 1915. 
_ Studhalter, R. A. (with Heald, F. D.) “Seasonal Dura- 
tion of Ascospore expulsion of Endothia parasitica.” Am. 
Jour. Bot., 1915. 
Zeller, S. M. “Notes on Cryptoporus volvatus.”” Mycol- 
ogia, 1915. 
Zeller, S. M. (with Frye, T. C.) “Hormiscia tetraciliata 
sp. nov.” Puget Sound Marine Station Publ., 1915. 
Zeller, S. M., and Abigail Neikirk. ‘Gas Exchange in the 
Pneumatocyst of Nereocystis Luetkeana —— , aR” 
Puget Sound Marine Station Publ., 1915. 
In the paragraphs below there are given, for the year 1915, 
some indications of the results from the published investiga- 
tions by members of the scientific staff and graduate 
laboratory. 
Burt, E. A. Ann. Mo. Bot. Gard. 2:627-656, 731-770. 
Continuing the monograph of the Thelephoraceae of North 
America, the first paper discusses the tic genus Exo- 
basidium. This fungus produces ya ike deformities and 
discoloration of leaves, fruits, and flowers of various heaths 
and of Symplocos. A critical study of the American collec- 
ions | to the conclusion that there are but three species 
distinguishable on morphological grounds. In the second 
