16 THE BOTANISTS OF PHILADELPHIA. 



of botany. All of the departments of botany, since the 

 establishment of the school, have received consideration at 

 the University. Morphology, taxonomy, physiology, paleo- 

 botany, economic botany, forestry, pathological and 

 geographical botany, have been taught at various times ; 

 chief stress, however, being laid on morphology, taxonomy 

 and physiolog}^, as the departments of botany most neces- 

 sary to students. A post-graduate class in botany, composed 

 of student candidates for the degree of doctor of philosophy, 

 has been maintained. The teaching force of late years, 

 consisting of Drs. Rothrock, Wilson, Macfarlane, Harsh- 

 berger and Porter, has maintained the standard desirable 

 in a modern school of botany. 



The Herbarium of the University, through the gener- 

 osity of Mr. Isaac Burk, possesses a singularly complete repre- 

 sentation of the flora of the vicinity of Philadelphia, con- 

 sisting of about six thousand specimens from this and 

 other localities. ]Mr. Aubrey H. Smith presented by will 

 his excellent herbarium, which, with the collection made by 

 the late Joseph Leidy, forms a most excellent working 

 herbarium. Many specimens from the earlier government 

 expeditions, and suites of the collections made by Parry, 

 Hall, Barbour, Vasey, Bolander, Palmer, Lemmon, Canby, 

 Ward, Pringle, Bebb, Wolfe, Curtis, Reverchon, Rothrock, 

 Harshberger and others, are represented. The herbarium 

 also contains a large proportion of our native ferns, mosses 

 and lichens, and over two thousand species of fungi, 

 all of which have been carefully determined. A museum 

 of economic botany was started l)y Dr. Rothrock in con- 

 nection with the School of Biology, and further additions 

 were made in material collected on his cruise to the West 

 Indies in the winter of 1889-1890. 



