THE BOTANISTS OF PHILADELPHIA. 19 



property will be devoted to the arboretum, which already 

 contains a number of trees of interest and beauty. These 

 are planted in systematic order along the drive-way which 

 enters on Woodland Avenue and encircles the garden. A 

 magnificent, ornamental bed, fashioned somewhat after the 

 beautiful bed in the famous Kew Gardens, in London, is a 

 feature. It is 200 feet long and 8 feet wide, and is filled with 

 herbaceous plants. Unlike the series of small beds before 

 referred to, it will not be a scientific feature, but will l)e the 

 chief ornament of the gardens. The plants are so arranged 

 as to present a succession of flowers from early spring to late 

 fall. 



The contractor in excavating left a deep cut in which 

 the pond, bog garden, iris bed, rockery and fernery are situ- 

 ated. The pond, of irregular shape, this last season (1898) 

 was filled with a splendid growth of ac[uatics, water lilies, 

 lotuses and water hyacinths being conspicuous, while the 

 aquatics, Marsilia quadrifolia, llyriophyllum, Nitella, Chara 

 Limnobium, Limnocharis and Trianea hogotensis grew 

 luxuriantly. The bog garden is situated along the ditch 

 connecting the Victoria tank and the lake. In separate 

 pockets formed by stones set on end are grown plants 

 which flourish in a water-logged soil, such as Decodon verti- 

 cillatus, Acorus calamuff, Typlia latifolia, Sparganium eurycar- 

 pum, Drosera rotundifolia, Sarracenia purpurea, S. ftava, 

 Helonias bullata, Orontium aquaticum, species of Carex, of 

 Cyperus, of Sagittaria, of Juncus, and a host of others too 

 numerous to mention. The iris bed adjoins the bog garden, 

 and is connected with it by a pipe through which a water 

 supply is furnished to the roots of the plants. The rock 

 garden covers the sides of the cut in Avhiclithe lake is situa- 



