,893-] 135 [Annual Meeting. 
makhio- 49 the total number at any time connected, with the cLass, 
of whom three subsequently dropped out. The largest attendance 
was 46, the average 40. 
A short written examination was held at the beginning of each 
exercise on the work of the preceding lesson. Thirty-four persons 
took the final examination, and their standing may be grouped as 
follows r — 
10 had 1(0% or upward (two of these receiving 100% and two 
others 98%). 
2 had oO% — 60%. 
6 had 60% —70%- 
6 had 70%fl —80%,. 
10 had 80% — 90%. 
The exercises durii 
November 0, 1892, 
ig the y(>a.r were l.') 
and terminating M.i 
in 
irc-l 
numi 
> 4, 
)ei", beginning 
1893. They 
consisted of lectures followed l)y laboratoi-y woik, based entirely 
on our common plants. Numerous specimens weie obtained 
from conservatories to illustrate the lessons and to help ont the 
observations made upon the dried specimens, of which a set of one 
hundred kinds was given to eacli student. Blackboard diagrams 
and illustrations from monographs on systematic botany were also 
freely used. 
])r. Greenleaf desires mo to acknowledge his indebtedness for 
the success of the course to his assistants, Miss Jennie M. Jackson, 
Miss Helen Sharp, and .Mr. Samuel F. Tower. 
As the plan of the course marks a de[)arturc from the usual 
methods of botanical instruction, a brief account of it may be of 
sufficient interest for record. 
The class consisted whollv of busy teachei-s nearly all of wliom 
had afair knowledge of the ty|)ical features of plant anatomy, antl 
most of whom could find the name of a plant in an analytical key, 
indeed knew by name qnite a nund)er of our common plants, but, 
excepting a few who had studied at the " Annex " or similar higher 
institutions, none had any conception of the fuiulamcntal laws of 
plant relationship and were inclined to consider the study of 
systematic botany as drudgery. 
The method of work was l)rietly as follows : the subject of 
''Evolution" was taken as a "working hypothesis." After giving 
some idea of the vast numbers of species existing today and in 
