(221) 
April 24, May 1, May 8, October 23, October 30, November 
8, and November 13. 
Lecture II, ‘Industries Depending on Forests. Plant 
Products,” by Dr. H. H. Rusby, on May 15, May 22, May 
29, October 2, October 9, October 16, and October 18. 
Lecture III, ‘* Classification of Plants,” by Dr. N. L. Brit- 
ton, on June 5, June 8, June 12, November 15, November 
16, November 20, and November 23. 
In the autumn these lectures and demonstrations were 
repeated on five consecutive Saturday forenoons for the bene- 
fit of any teachers who desired to attend. Comparatively few 
teachers, however, availed themselves of this privilege. 
OTHER LEcTURES 
Lectures at other institutions by members of the staff have 
been given as follows: 
February 15. Before the Academy of Science and Art of 
Pittsburg, on ‘‘ Fossil Plants and Some Lessons Taught by 
Them,” by Dr. Arthur Hollick. 
May 9. Before the Richmond County Medical Society, 
Staten Island, on ‘*The Geology of Staten Island Water 
Supplies,” by Dr. Arthur Hollick. 
May 9. Before the Horticultural Society of New York, on 
‘* Horticulture in the West Indies,” by Dr. N. L. Britton. 
May 23. Before the Torrey Botanical Club at its anniver- 
sary meeting, ‘‘ A Historical Sketch of the Development of 
Botany in New York City,” by Dr. H. H. Rusby. 
November 13. At St. Andrew’s Church, Richmond, Staten 
Island, on ‘* A Canoe Trip Down the Yukon River, Alaska,” 
by Dr. Arthur Hollick. 
December 14. Before the New York Association of Biology 
Teachers, on ‘‘ How can Secondary School Teachers of 
Biology maintain a spirit of Investigation while engaged in 
Teaching?,” by Dr. C. Stuart Gager. 
December 17. Before the New York Academy of Sciences, 
on ‘* Color in Plants,” by Dr. N. L. Britton. 
December 28. At the American Museum of Natural His- 
tory, ‘‘John Torrey,” by Dr. N. L. Britton. 
