42 NATURE STUDY. 



The materials of which the spear heads are made differ 

 as much as those of the arrow points. Many of them are 

 made of stone that is not found in New England and must 

 hav^e been brought here either in the finished implements or 

 in flakes. Such a varietj'of materials has been found here 

 that it has been thought by some, and with apparent good 

 reason, that here at Amoskeag was the trading place or ba- 

 zaar for the Indians of this vicinity. To the permanent 

 village at the falls, kept here b}- the numberless fish in the 

 river, came the implement makers and traders from the 

 different villages and tribes. Here the resident artificers 

 made their points of quartz and various other igneous rocks. 

 Hither were brought the flakes of flint and chert from the 

 south and west and exchanged for goods or sold for wam- 

 pum. Here are found chips of all kinds l)y the bushel and 

 implements by the thousand have been picked up and car- 

 ried away. 



Notes on the Growth of Trees. 



BY O. H. LEAVITT. 



The manner of feeding trees and plants followed bj- many 

 people shows that they have the impression that, as with 

 the living animal, an5'thing put within reach of the mouth 

 goes to the benefit and support of the whole body. That 

 such is not the case in tree growth is shown in many in- 

 stances. It seems like a tangled path for sap to follow 

 from the end of an elm-tree root several rods away from the 

 trunk, up through the crooked and twisted fiber of the 

 body and out to the ends of the branches on the same side 

 of the tree, but I have noticed many instances which 

 showed that each root or system of roots had a given por- 

 tion of 'the trunk and top to support. I will begin with 

 local cases. 



When there was a stable where the Manchester House 



