Amphibia from Tegelen, 12. 



Amstelian, 8, 9, 153. 



Anacardiaceae, 108, 109. 



Andersson, G., 153. 



Anemone nemorosa, 90; PL VII, fig. 17. 



spp., 1, 89, 90; PI. VII, figs. 18-22. 

 Anodon, 13. 

 Anonaceae, 94, 95. 



Aphanisma, 30, 84; PI. VI, figs. 17, a, b. 

 Apium, 48. 

 Aquifoliaceae, 109. 

 Aquilegia vulgaris, 40. 

 Araceae, 71, 72. 

 Araliaceae, 35, 42, 124. 



^4ra/fa racemosa, 35, 124; Pi. XIV, figs. 26, 27. 

 Avaucaria?, 27, 54; Pi. I, figs. 5, 6. 

 Arctic regions, 23, 25. 



„ species, 1, 5, 9, 20. 

 Arctium, 50. 



Ardisia, 35, 128, 129; PI. XV, figs. 26, a, b. 

 Arenaria serpyllifolia, 46. 

 Aristolochiaceae, 83. 

 Arnold Arboretum, 3. 

 ^4sarum, 30, 83; PI. VI, figs. 11, 12. 

 Asia Minor, 17, 91, 92. 

 Asia, physical geography of, 16—22. 

 Asiatic flora, relations with the European Pliocene 16—24, 51, 52; resemblance to the 



American, 16, 18, 20-22, 25, 26. 

 Asiatic plants, see China, etc. 

 Atlantic flora, 19. 



, influence of the, 14. 

 Atriplex hastata, 46. 



„ patula, 40. 



„ ?, 30, 84; PI. VI, fig. 16. 

 Australian plants, 15, 25, 82, 104, 129, 130. 



Ballota nigra, 49. 



Baltic glacier, 6, 11. 



Baren, J. van, 156. 



Barriers to migration, 1, 9, 17—21, 26. 



Batrachium, 89. 



160 



