Vegetation of Northern Cape Breton. 263 



island to Aspy Bay, and from here to Ingonish, from which point 

 another excursion was made into the interior. 



As a desirable adjunct to the ecological investigations, con- 

 siderable attention has been devoted to the flora of the region : 

 two papers on the bryophytes of Cape Breton have already been 

 published ('i6% '18), and a similar catalogue of the vascular 

 plants is contemplated. Incidentally, in addition to the studies in 

 northern Cape Breton, the writer has recently visited two other 

 widely separated areas within the transition region : in the spring 

 of 1916 a week was spent at the Yale Forest School Camp near 

 Brandreth, in the western Adirondacks ; while during the sum- 

 mer of 191 7 nearly a month was occupied, in company with Dr. 

 Harold St. John of the Gray Herbarium, in exploring the vipper 

 waters of the St. John River, in northwestern ]\Iaine. Also, in 

 connection with the study of raised bogs in northern Cape Breton, 

 a visit was made, in 1917, to one of the New Brunswick bogs 

 described by Ganong ('91, '97). 



III. ACKNOWLEDGMENTS 



The writer wishes to express his indebtedness to Professor 

 Alexander W. Evans for his continued interest in this work 

 throughout its progress ; to Mr. Albert F. Hill, Professor Merritt 

 L. Fernald, Dr. Harold St. John, and Mr. Charles A. Weatherby, 

 who have determined or passed judgment on the vascular plants 

 collected ; to Professors A. Le Roy Andrews and Lincoln W. 

 Riddle, who have determined the sphagnums and lichens respec- 

 tively; and to various others (see Nichols '16^), who have assisted 

 in the determination of the bryophytes. 



IV. PHYSIOGRAPHY 



Cape Breton Island is about 4,000 square miles in area : it is 

 approximately four-fifths as large as the state of Connecticut. Its 

 greatest length (from the Gut of Canso to Cape North) is about 

 no miles, its greatest width (from Margaree Harbor to Cape 

 Breton) about 75 miles. The general configuration of the island 

 is brought out by the map (Fig. 2). It comprises two distinct 

 peninsulas, which are united at the south by the narrow Istlimus 



