22 THE BOTANISTS OF PHILADELPHIA. 



adjoining, has be.en erected by the Class of '73. A vivarium 

 or building for small animals is in course of erection in the 

 garden enclosure immediately in the rear and to the west 

 of Biological Hall. A small garden is much better for 

 scientific work than a large one, the cost of maintenance of 

 the latter being considerable. The University garden of 

 five or six acres is therefore admirably adapted to its pur- 

 pose, being near to the laboratory where the botanical 

 instruction is given. The illustrations will convey better 

 than words the appearence of the garden after it had been 

 planted in 1896, and again after the construction of the 

 greenhouse additions and vivarium in 1899. 



The Botanical Society of Pennsylvania was instituted 

 at the University of Pennsylvania, October 23, 1897. Under 

 its auspices a fortnightly series of popular meetings and of 

 scientific meetings have been held since organization, while 

 during the fall, spring and summer, courses of laboratory 

 demonstrations and field excursions have been held. A 

 great variety of interesting papers were presented during 

 the first year of the society's existence. Living plants from 

 various greenhouses, charts, diagrams, lantern slides and 

 specimens added very much to the attractiveness of the 

 several meetings. The class meetings were held at the 

 Biological Hall of the University, where the greenhouses 

 and garden aff'orded much interesting and valuable material. 

 The general meetings were held in the auditorium of the 

 Harrison Chemical Laboratory. The following persons have 

 interested themselves in the movement : Dr. John M. Macfar- 

 lane, Professor of Botany; Dr. Henry Kraemer, Messrs. 

 Roberts LeBoutellier, W. H. Walmsley, Drs. A. W. Miller, 



