i88 



Index. 



Populus tremula, 61, 76, 81, 150. 

 Postglacial period, length of the, 

 Potatnogeton crispus, 156, 157. 

 de??sus, 157. 



filiformis, 158. 



heterophyllus , 155. 



I ucet! s, 156. 



nutans, 155. 



obtusifolius, 157. 



pec /hiatus, 158. 



perfoliatus, 156. 



pmlongus, 156. 



pit si litis, 157. 



— rufescens, 155. 



trichoides, ioo, 157, 



Zizii, I^v 



Potent ill a Com a nun, 117 



Tormentilla, 116, 117. 



Poteriti/u officinale, 117. 118. 

 Potonie\ H. , 153. 

 Prairies, plants of, 15, 21, 22. 

 Preglacial flora, 1. 2, 35, 56, 39, 50-32, 

 58, 62, 63, 64, 74, 82, 83, 84-86, 88, 



89. 93. 99. I7I-I79- 

 Prestwich, Sir J., 71, 88, 145. 

 Privet, 28. 



Provinces, botanical, 10. 

 Prunella vulgaris, 136. 

 Prunus Avium, 114. 



dottiest ica, 114. 



Pad us, 114. 



spi/iosa, 113. 



Prussia, 52, 68, 75, 81. 



Pteris aquilina, 168. 



Pyrenean plants in Britain, 2-5, 14, 15, 



17, 18, 24-27, 40, .'2. 

 Pyrus Aria, 85, 119. 



Aucuparia, 61, 119. 



communis, 65, 119. 



Mains, 23. 



tormina lis, 75, 78, 118. 



Quercus Robur, 23, 26, 28-30, 46, 100, 

 145, 146. 



Rabbit, bones of, 66. 



Races and subspecies, 4, 5, 102. 



Rainfall, 10, 11, 14. 



Ranunculus acris, 103. 



aquatilis, 4, 26, 101. 



bulbosus, 104. 



Ficaria, 105. 



Flatnmula, 4, 103. 



hederaceits , 102. 



Lingua, 103. 



parviflorus, 105. 



re pens, 104. 



— — Sardous, 104. 



sceleratus, 102. 



Red Crag, 35. 



Redhall, near Edinburgh, 53, 60, 86, 87, 



in. 

 Reeds, 57, 80, 167. 

 Reid, Miss M. A., 66. 

 Reindeer, 20, 81, 93, 94. 

 Renfrewshire, 63, 70, 86, 98, 106, 132. 

 Rhaninus Frangula, 112. 

 Rhine, old course of the, 35, 97. 

 Rhinoceros, 54, 55, 81, 94. 

 Rhododendron, 12. 

 Ridley, H. N., 146. 

 Ripening of seeds, period of, 2, 4. 

 Robertson, D. , 59, 70. 

 Rock Doves, acorns carried by, 30. 

 Romans, plants introduced by the, 16, 



51, 89, 103, 112. 

 Roman Period, 51, 52, 89, 93, 96, 171- 



179. 

 Rooks carrying acorns, 29, 30. 

 Rosa, 118. 

 Rubus cctsius, 116. 



fruticosus, 26, 115, 116. 



fdcrus, 59, 115. 



saxatilis, 116. 



Rum ex Acetosella, 141. 



conglomerates, 139, 140. 



crispus, 140. 141. 



Hydrolapathum, 141. 



maritimus, 140. 



obti'sifolius, 140. 



Ruppia maritima, 158. 

 Ruscus aculeatus, n, 12. 

 Rushes, 22, 26, 66, 69, 87. 

 Russia, 163, 166. 



Sagittaria sagittifolia, 154. 



Saint Cross, Suffolk, 90. 



Salisbury, Arctic mammals of, 21, 42, 45. 



