2 SEMI-CENTENNIAL OF TORREY BOTANICAL CLUB 
“Reminiscences,” by Rev. Dr. Н. M. Denslow. 
“А sketch of the life of Coe Finch Austin," by Mrs. Abraham 
Demarest (Sarah Elizabeth Austin). 
“Тоггеу Botanical Club reminiscences,” by Dr. N. Г. Britton. 
"Contact and pressure reactions in Pediastrum simplex," by 
Professor В. A. Harper. Illustrated by lantern-slides. Dis- 
cussion by Drs. N. L. Britton, A. F. Blakeslee, E. W. Olive, 
and J. H. Barnhart and Professor G. F. Atkinson. 
“Тһе origin of the Hawaiian flora," by Professor Douglas Hough- 
ton Campbell. (Read by title in absence of the author.) 
“Uredinales of Cuba," by Professor J. C. Arthur and Mr. J. К. 
Johnston. (Read by title in absence of authors.) 
“Six misunderstood species of Amanita,” by Professor George Е. 
Atkinson. Illustrated by lantern-slides. 
“ Sisyrinchium Bermudiana Linnaeus," by Oliver Atkins Farwell. 
(Read by title in absence of the author.) 
“Тһе individuality of the bean-pod as compared with that of the 
bean-plant," by Helene M. Boas. (Illustrated by charts.) 
“Two months in the southern Catskills,” by Мг. О. P. Medsger. 
Illustrated by photographs. Discussion by Dr. N. L. Britton. 
“The ferns of tropical Florida," by Dr. John K. Small. Illus- 
trated by map and photographs. Discussion by Dr. N. L. 
Britton. (Published in Am. Mus. Jour. 18: 127-135. 1918 ` 
[Illust.].) 
“Fossil plants from Porto Rico," by Dr. Arthur Hollick. (Read 
by title in absence of the author.) 
“ A cotton-rust epidemic in Texas," by Dr. E. W. Olive. Dis- 
cussion by Professor G. F. Atkinson. 
"Bermuda Algae," by Dr. Marshall A. Howe. Illustrated by 
lantern-slides. Discussion by Drs. Tracy E. Hazen and N. L. 
Britton. (Published in more extended form in Britton, N. L., 
“Flora of Bermuda,” in press at the time of presentation.) 
"Some factors influencing the stimulative action of zinc sulphate 
on the growth of Aspergillus niger," by Mr. R. A. Steinberg. 
(Introduced by Professor R. A. Harper.) Discussion by Pro- 
fessors George F. Atkinson and Herbert M. Richards and Drs. 
N. L. Britton and A. F. Blakeslee. 
" Centrosomes in fertilization stages of Preissia quadrata," by Dr. 
Margaret A. Graham. Illustrated by lantern-slides. 
