181 
INDEX. 
—_ 
Abbott, W. J. L., 54, 151. 
Accidental dispersal of plants, 20, 21, 
26, 30, 31, 97. 
Acer campestre, 24, 28, 68, 85, 113. 
mouspessulanum, 53, 88, 95, 98, 
99, 113. 
—— platanoides, 75, 82, 113. 
—— Pseudo-platanus, 12, 16, 24, 28. 
Acorns, dispersal of, 23, 29, 30. 
Adaptation for dispersal, 2, 4, 20-32. 
— to environment, 2, 4. 
Admiralty Offices, London, 54. 
Zthusa Cynapium, 66, 89, 124. 
Airdrie, Lanark, 54, 68. 
Ajuga reptans, 137. 
Albert Dock, N. Woolwich, 55, 93. 
Alchemilla arvensis, 117. 
Alder, 39, 52, 144. 
Alisma Plantago, 154. 
ranunculoides, 81. 
Allenton, near Derby, 55. 
Alnus glutinosa, 39, 52, 144. 
incana, 39. 
Alpine flora of Britain, 2, 3, 13, 14, 20, 
21, 25-27, 49, 53- 
Alternations of climate, 2, 7, 8, 20, 21, 
33-47) 97- 
Amphibia, dispersal of, 7. 
American plants in Britain, 18, 19. 
America, prairie vegetation of, 15. 
Andersson, Dr. Gunnar, 51, 92, IOI, 
106, 107, III-116, 119, I2I-125, 
131-134, 136, 139. 141, 143, 147- 
152, 154-156, 158-160, 163, 164, 
166-169. 
Andromeda Polifolia, 100, 133. 
Angelica sylvestris, 124. 
Animals and plants, interdependence of, 
4) 6, 23-32, 97- 
geographical distribution of, 
2, 3, 6, 7 
Animals, means of dispersal of, 6, 7. 
use of fossil, in classification, 
53s 54- 
Annual plants, conditions needed by, 
II, 12, 
Anthriscus sylvestris, 123. 
Apium graveolens, 122, 
nodifiorum, 122. 
Apple, 28. 
Apus glacialis, 56, 57. 
Aquatic plants, distribution of, 14. 
—_—— means of dispersalof,26. 
Arbutus, 17, 18, 26, 42. 
Arctic mammals in Britain, 7, 20, 21, 
40-42, 45, 81, 83, 93, 94. 
——- plants in Britain, 2, 13, 14, 20, 21, 
25-27, 37, 39: 49, 50, 52, 53, 79, 99, 
oo. 
——- Regions, plants of the, 39, 99, 
100. : 
Willows, 14, 57-59, 62, 64, 65, 
68, 70, 73, 77; 78, 83, 84, 99, 149. 
Arctostaphylos alpina, 132. 
Uva-urst, 21, 23, 42, 
I00, 132. 
Arenaria peploides, 110. 
trinervia, 82, 109. 
Armistead, J. J., on dispersal of acorns, 
29, 30. 
Arnold-Bemrose, H. H., 55. 
Ash, 24, 28, 69, 82, 133. 
Aster Tripolium, 128. 
Atriplex patula, 138. 
Athyrium Filix-femina, 168. 
Auchtertool, 66. 
Ayrshire, 66, 79, 80, 84. 
Bacton, 56. 
Baker, E, G., on Kerry Plants, 4, 5. 
