﻿Nichols: The vegetation of Connecticut 217 



the spruce is cut off it becomes largely, if not entirely, replaced by 

 red maple. While, therefore, the writer's conception as to the 

 origin of spruce bogs is based entirely on circumstantial evidence, 

 the explanation set forth seems to account in a satisfactory manner 

 for the observed facts. 



Occurrence of Spruce Bogs in Connecticut. — So far as the writer 

 has been able to ascertain from his own field work and from inquiry 

 among local botanists, fewer than thirty spruce bogs are known to 

 exist within the state. These are distributed as follows: Salis- 

 bury*, Norfolk (3)*, Kent (2), Litchfield*, Suffield (6)*, South 

 Windsor (2), WilHngton*, East Thompson (2), New Fairfield*, 

 Monroe*, Middlebury (2), Southington (2)*. Bogs containing an 

 admixture of spruce and coast white cedar occur at Bethany*, 

 Plainfield (2)*, WilHngton and Windham; while spruce grows in a 

 red maple swamp at Southington*. 



Acknowledgments 



The manuscript of this paper has been examined by Professor 

 H. E. Gregory of the Geological Faculty of Yale University, 

 Dr. C. A. Davis of the United States Bureau of Mines, Professor A. 

 W. Evans of the Botanical Faculty of Yale University, Mr. C. A. 

 Weatherby of Hartford, and Mr. C. H. Bissell of Southington, 

 to all of whom the writer is greatly indebted for helpful sug- 

 gestions and criticism. 



Sheffield Scientific School of Yale University 



* Bogs so marked have been visited by the writer. 



