PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 61 



4, (14.) Tilia americana. American Linden. " Lin." 



A very common tree, growing cbiefl}^ near the river banks, but occur- 

 ring- in ail ricli woods. The average height of the larger trees is about 

 100 feet, but an elevation of 125 or even 130 feet is sometimes reached, 

 the diameter of large trees averaging about 3 feet. In the Wabash bot- 

 toms single trunks of the " Lin" are exceedingly rare, fully 80 per cent, 

 of the trees consisting of compound trunks, as if several trees had grown 

 up close together and become more or less completely coalesced at the 

 base. 



The following measurements are of trees of rather exceptional size : 



Example h was the largest I have seen, but was divided into three 

 trunks a short distance from the ground. 



5. (15.) TUia heterophylla. White Basswood. 



This tree has been found near Mount Carmel by Dr. Schneck, but I am 

 not autoptically acquainted with it. Possibly some of the measurements 

 given under the head of T. americana belong to this species. 



6. ( — .) Ilex verticiliata. Black Alder. 



Very abundant about the borders of ponds and swamps, and the 

 mouths of the creeks, forming dense almost impenetrable thickets. In 

 some localities it grows to a height of 20 feet and upwards, with a stem 2 to 

 nearly 3 feet in circumference. The two largest measured were 2 feet 

 11 inches, and 2^ feet, respectively, in girth, and the tallest (cut down 

 especially for measurement) 28 feet high. Taller specimens, which were 

 apparently about 35 feet high, were seen in the Cypress swamp, in the 

 lower part of Knox County, Indiana. 



7. {AOf) ^sculus glabra? Smooth Buckeye! 



Although I give the species as ^. glabra, on the strength of Dr. 

 Schneck's identification, I am not sure but that we have the JE. fxiva 

 also. The specimens examined by me (a considerable number, in the 

 bottoms nearly opposite the village of Eochester, Wabash County), 



