OF ORNAMENTAL TREES. 233 



turn to a pale lemon yellow, and are amongst 

 the earliest to mark the progress of the season. 



The best soil for it is a deep cool loam, 

 though it will grow pretty well in any not 

 liable to extremes of wet or dry. It may be 

 propagated by seed sown as soon as ripe, 

 which will mostly appear the following 

 spring. The most usual plan is by layers 

 put down as soon as the wood is ripe, some- 

 where about the month of June. Sometimes 

 these layers are tongued and pegged down, 

 at other times merely twisted a little near 

 the base of the stool, which is then moulded 

 up with earth to just above the twisted parts. 



The best Bartram specimen on dry soil is 

 eighty-two feet high and five feet ten inches 

 in circumference. 



2. T. EUROPOBA, Linnaeus. Leaves twice 

 the length of the footstalks, glabrous beneath. 

 Petals without nectaries. Flowers appearing 

 a month earlier than the last. Fruit nearly 

 or quite globose. European linden. 



This species grows more regular and coni- 

 cal than the last, and when growing by itself, 

 its branches sweep the ground. In such 

 cases it forms one of the most beautiful ob- 

 20* 



