492 



Index 



u 



'Uninhabited wilderness, Katmai district, 173. 



'Vaccinium ovalifolium, 201. 



Vaccinium uliginosum, 193. 



Verbena, 12. 



Vegetation recovery at Kodiak, 5*, 6, 7*. 



Vegetation Stations, 24-31, 22*. 23*, 26*. 27*. 

 How marked, 26, 27. Compass bearings taken, 

 28. Photographic location, 28, 29, 30. Loca- 

 tions, 24. Records, 25. Selection, 25. 



'Vegetation Station markers, 25-30. 



Vitality of buried plants, 32, 195, 196. 



Titis ida;a, 33, 193. 



Titis sicyoides, 12. 



"Volcanic ejecta varieties, 8. 



W 



Warbler, Alaska yellow, 486. 



Piliolated, 486. 

 Waterlaid deposits as plant habitats, 326*, 328' 



329*. 333, 333*. 334. 



Water washed ash as plant habitat, 330. 

 Wheat growth in ash, 326. 

 Widgeon, American, 479. 



Willow as pioneer, 329, 330. 

 Widow, pussy, new growth, 201, 203*. 

 Wilsonia pusilla piliolata, 486. 

 Wind action, 339, 340. 

 Wind action on ash, 37, 38, 39. 

 Composition of ash, 37. Ash dunes, 38. Plant 



struggles, 38. 

 Windblown ash, 338. 



Wind distribution of seeds, 323, 324, 327, 339. 

 Wind erosion, 338. 



Wind retards revegetation, 335, 336, 337, 338. 

 Wind velocity, 340. 

 Wood chars in fumarole, 263. 

 Woody plant survivals, 320. 



Zone five, trees killed, herbage buried, 174*. 175, 



184*. 185, 185*, 186, 187. 

 Zone one, acid rainfall, 174*, 173, 175, 186. 

 Zone four, trees killed, grass recovered, 174*, 175, 



176, 177, 178*. 



Zones of damage, 173, 174*, 175. 

 Zone of incineration, 175, 204, 208. 

 Zone two, smaller plants damaged by ashfall, 174, 



175, 176*. 

 Zone three, area on mainland slightly injured, 



174*. 175, 176, 183. 

 Zonotrichia coronata, 484. 



