36 Proceedings of the Ohio State Academy of Science. 



however, it is but a small tree. It is also found in Greene, Mor- 

 gan and Scioto counties. 



The Arbor vitae {Thuja occidcutalis) has been collected in 

 the southern half of the State. In an interesting swamp near 

 Springfield, Clark County, known locally as Cedar Swamp, this 

 tree is the dominant one^". With it is associated Betula pumila. 

 This is the southernmost range in the State of this northern 

 shrub. In the gorge of the Little Miami near Yellow Springs, 

 Greene County, the Arb'or vitae is a fine, large tree. The Red 

 cedar {Junipc7'us Tirginiana) is also more abundant in the south- 

 ern than in the northern half of the State. It is generally dis- 

 tributed thru the southwestern counties and along the Ohio 

 River as far east as Gallia County. The Larch or Tamarack 

 {Larix laricina) seems to be entirely absent from the central 

 and southern parts of the State. While Oxycoccus macrocarpus, 

 the only Ohio species of cranberry, finds in this cranberry bog 

 its southernmost range. Scheuchzeria palustris is another typical 

 bog plant which seems to be rare in Ohio. In the history of 

 Licking County,^^"* the statement is made that the large peat 

 bogs of the county were formerly cedar swamps. "The great 

 peat bog along the north fork feeder in the outlots of Newark, 

 was a cedar swamp and the bogs lie beneath and upon its sur- 

 face." From personal inspection of the region here mentioned, 

 and from conversation with various residents of Newark, I have 

 not been able to verify this statement. Cedar Hill cemetery in 

 Newark lies on a morainal ridge on which are a large number 

 of cedars, both Thuja occidentalis and Juniperus virginiana. 

 The ridge was forested but the cedars were planted since the 

 beginning of the cemetery sixty years ago. Each person buy- 

 ing a lot, planted cedars, the Arbor vitae in a hedge around the 

 lot. Later the hedges were abolished and the trees at the corners 

 only preserved, which accounts for the present mathematical 

 arrangement of these trees. 



5. Because the bog in point of development is still in a 

 state of fluctuation and has not reached a relative stability, a 

 climax_ society. The bog forest towards which the island is 



