252 Contents. 



Page 



B. Secondary Formations of the Xerarch Series 334 



Formation-types resulting primarily from Human Activity 334 



a. Association-complexes due to Cultivation 334 



b. Association-complexes due to Fire 341 



c. Association-complexes due to Logging 346 



C. Primary Formations of the Hydrarch Series 347 



1. The Formation-types of Lakes and Ponds Inland 347 



a. Introductory 347 



b. The Association-complexes of Well-drained Lakes 



and Ponds 350 



c. The Association-complexes of Undrained Lakes and 



Ponds 353 



2. The Formation-types of Lake- and Spring-swamps 



Inland 354 



c. Introductory 354 



b. The Association-complexes of Well-drained Swamps 356 



c. The Association-complexes of Undrained Swamps . . 359 



d. The Association-complexes of Poorly Drained Swamps 364 



3. The Formation-types in and along Rivers and Streams 368 



a. Introductory 368 



b. The Association-complexes of Ravines 369 



c. The Association-complexes of Flood Plains 371 



4. The Formation-types along the Seacoast 374 



a. Introductory 374 



b. The Association-complexes of Salt and Brackish 



Lakes and Ponds 375 



c. The Association-complexes of Salt Marshes 376 



d. The Association-complexes of Brackish Marshes . . . 279 



D. Secondary Formations of the Hydrarch Series 383 



Formation-types resulting primarily from Human Activity 383 



Association-complexes due to Various Agencies 383 



THE NORTHEASTERN EVERGREEN CONIFEROUS FOR- 

 EST CLIMATIC FORMATION IN NORTHERN CAPE 

 BRETON 385 



L GENERAL CONSIDERATIONS 385 



IL THE REGIONAL CLIMAX ASSOCIATION-TYPE: THE 



CLIMAX FOREST 389 



III. THE EDAPHIC FORMATION-COMPLEX OF THE RE- 

 GION 395 



