8 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
for this purpose. The remainder of the lessons was devoted to a 
study of the structural features of constructional types of topog¬ 
raphy, as eskers, terraces, lake beds, and drumlins. The localities 
visited for this purpose were in the immediate neighborhood of 
Boston. One extended trip was made to Mount Holyoke and Mt. 
Tom in the Connecticut valley, taking nearly three days for the 
complete lesson. 
The lessons during the autumn included five upon constructional 
topographical features, drumlins, terminal moraines, kettle holes, 
and lake beds. The remaining five were devoted to structural 
features of the solid crust, stratification, dikes, and intrusive beds. 
These lessons were all consecutive parts of a regular four years’ 
course. The places visited were Orient Heights, Arlington, Rock- 
port, Clinton, Cambridge, Somerville, Roxbury, Winter Hill, New¬ 
ton Center, and in an extended trip of two days, the Hoosac and 
Greylock mountains. The spring course for the present year has 
opened with an attendance of 108. 
Laboratory Courses. 
Each of the laboratory courses, botany, zoology, and geology, 
consists of a series of fifteen lessons of two hours each during each 
year for four years, a total of sixty hours for each course. Very 
commonly, as is the case this year, sixteen lessons are given exclu¬ 
sive of the final examination. Short examinations are given at each 
exercise and at the end of each year a final examination of three 
hours is given. Those members who have passed satisfactory exam¬ 
inations during the four years receive a diploma stating the kind 
and amount of work accomplished. 
The small size of the laboratory, only 50 seats, in which the 
botany and zoology lessons are given, necessarily limits the number 
receiving tickets to these courses. Unfortunately some of those 
receiving tickets find the work too difficult for their previous train¬ 
ing, and consequently drop out after the first few weeks; others are 
kept out by sickness, so that by the end of the term not even the 
small number of seats is filled even though many applicants were 
denied tickets at the beginning of the course. 
Botany .—This course in charge of Mr. Webster, assisted by 
Miss Jennie F. Conant, began its third year on November 21st, 
