12 Contents 



CHAPTER V 



Adjustment to Conditions of Aquatic Life 



I. Individual Adjustment, p. 242. I. To open water: Flotation, p. 243. 

 Swimming, p. 249. 



2. Adjustment to shore life, p. 251. Avoidance of silt, p. 252. Bur- 

 rowing, p. 254. Shelter building, p. 257. Withstanding current, p. 258. 



3. Adjustment of life cycle: Encystment, p. 261. Winter eggs, p. 266. 



4. Readaptation to aquatic life: Plants, p. 270. Animals, p. 273. 



77. Mutual Adjustment, p. 282. 1. Insectivorous plants, p. 283. 

 2. The larval habits of river mussels, p. 286. 



CHAPTER VI 



Aquatic Societies 



I. Limnetic Societies. 1. Plancton, p. 294. Seasonal range, p. 302. 

 Plancton pulses, p. 305. Distribution in depth, p. 307. 

 2. Necton, p. 313. 



//. Littoral Societies. 1. Lenitic Societies, p. 315. Plants, p. 318. Ani- 

 mals, p. 324. Spatial relations of lenitic animals, p. 326. The life of 

 typical lenitic situations, p. 333. Of ponds, p. 334. Of marshes, p. 

 341. Of bogs, p. 348. Of stream beds, p. 356. 

 2. Lotic societies, p. 363. Plancton gathering forms, p. 364. Free 

 living foragers, p. 368. Shelter-building foragers, p. 371. 



CHAPTER VII 

 Inland Water Culture 



I. Aboriginal -water culture, p. 377. 



II. Water crops: Plants, p. 379. Animals, p. 382. Fish culture, p. 384. 

 The forage problem, p. 387. Staple forage crops, p. 389 The way 

 of economic progress, p. 399. 



///. Water culture and civic improvement, p. 401. Reclamation enterprises: 

 Wa b •' t lands, p. 402. Reservoirs, p. 403. Scenic improvement, 

 p. 404. Private water culture, p. 406. Swamp reservations, p. 408. 



BIBLIOGRAPHY p. 413 



List of initials and tail-pieces p. 420 



Index p. 421 



