P E E F A C E. 



THE territory covered by this Catalogue of Plants 

 comprises the Island of Mount Desert and the ad- 

 joining islands, the more important of which are the 

 Cranberry Isles, Bartlett Island, Thompson Island, and the 

 Porcupine Islands. The Duck Islands, lying some miles 

 seaward southerly from the Cranberry Isles, are also in- 

 cluded for convenience, although having no close con- 

 nection geographically with the rest of the territory. 

 Politically it comprises the towns of Eden, Mount Desert, 

 Tremont, Cranberry Isles, a small part of Trenton, and a 

 part of Long Island Plantation, in which the Duck Isl- 

 ands are included. All of this territory, with the ex- 

 ception of the Duck Islands, is shown on the map that 

 has been prepared to accompany this Catalogue. 



In 1880 the Champlain Society, an association of college 

 students formed for the purpose of field work and study 

 in various branches of natural science, established its 

 camp on the shores of Somes Sound at Wasgatt Cove, 

 Mount Desert Island. This Catalogue of Plants repre- 

 sents the final results of work begun by its botanical 

 department, while the introductory article on the Ge- 

 ology of Mount Desert represents the work of its geo- 

 logical department. Two years later one of the authors, 

 John H. Redfield, began independent investigation of 



