(i79) 



the woods fringing the hemlock grove. This valley is about 

 1,500 feet long and averages about 300 feetwide. A small 

 stream runs through it from north to south and is here 

 and there broadened out into pools. The plants are 

 arranged in beds according to their natural botanical 

 families. At the southern end are the seedless plants, 

 represented by the ferns and their allies; east of the brook 

 are the families of seed-bearing plants belonging to the 

 large endogenous division, or those with parallel-veined 

 leaves and with one seed-leaf (monocotyledons). To 

 the west of the brook are the families belonging to the 

 exogenous division of plants, or those in which the leaves 

 are usually net-veined and which have two seed-leaves 

 (dicotyledons); this latter group embraces the larger 

 part of the plants in the collection. Along the brook, 

 or in it, may be found many aquatic plants, representing in 

 some cases families which are exclusively water-lovers, 

 while in other cases they are aquatic representatives of 

 families occurring in the immediate vicinity in the beds. 

 In this plantation, the family groups are arranged sub- 

 stantially in a sequence beginning with those of simpler 

 organization and proceeding to the most complex. 



The series commences in the southern corner of the valley 

 at the foot-path entrance, where the hardy ferns and their 

 allies may be found, including species from many parts of the 

 north temperate zone. Among these may be mentioned the 

 ostrich fern, the cinnamon fern, Clayton's fern, the royal 

 fern, the brake or bracken, and a number of species of the 

 shield-ferns and of the spleenworts. Some of the aquatic 

 representatives of the ferns and rheir allies may be found 

 in the pond nearby. 



In this pond may also be found the following aquatic 

 endogenous families: the cat-tail family, the bur-reed 

 family, the pond-weed family, and the tape-grass family. 

 At the junction of the brook with this pond is the water- 

 plantain family, including, besides the water-plantain, 

 several species of arrow-head (Sagittaria). A little be- 



