(iii.) 
London Botanical Society, The ... ... ... ... 250 
London, Honours and Post-Graduate Courses in Botany 
at the University of ... ... ... ... ... 252 
Munich, The Botanical Institute at—M.C.S. ... ... 82 
Nitrogen-Metabolism on Land and in the Sea—V.H.B. ... 125 
Origin of Flowering Plants, The—M. Benson ... ... 49 
Oscillaria (see Chromatic Adaptation). 
Palaeozoic Seeds, Notes on Trigonocarpus , Brongn. and 
Polylophospermum, Brongn., two genera of (Plate II.) 
—F. W. Oliver. 96 
Palaeozoic Rocks, An Exhibit of Specimens of Seed¬ 
bearing Plants from the—F.W.O. ... ... ... 176 
Parasite of Stigmarian Rootlets, A Probable (Figs. 66 and 
67)—F. E. Weiss ... ... ... ... 63 
Parasitism in the Erysiphaceae, On Specialization of, II. 
—E. S. Salmon ... ... ... ... ... 109 
Parasitism in the Erysiphaceae, Recent Researches on the 
Specialization of—E. S. Salmon ... ... ... 55 
“ Parthenogenesis,” On the Relation of Fertilisation, 
“ Apogamy ” and—V. H. Blackman... ... ... 149 
Piperaceae, The Seedling structure of certain—T. G. Hill 46 
Pleodorina in the Freshwater Plankton of Ceylon, The 
Occurrence of—F. E. Fritsch ... ... ... 122 
Pollination of the Primrose and of the Cowslip, Further 
Observations on the—F. E. Weiss ... ... ... 168 
Polylophospermum Brongn., Notes on Trigonocarpus Brongn. 
and, two genera of Palaeozoic seeds (Plate II.) — 
F. W. Oliver ... ... ... ... ... ... 96 
Primrose and Cowslip, Further observations on the 
Pollination of the—F. E. Weiss .. ... ... 168 
Psilotum, Secondary Tracheides in (preliminary account) 
L. A. Boodle ... ... ... ... ... ... 48 
Pteridosperm, A New—O. ... ... ... ... ... 32 
Ptcris aquilina L. and Pteris incisa Thunb. var. integrifolia 
Beddome, The Vascular System of the Rhizome 
and Leaf-Trace of (Figs. 1—59)—A. G. Tansley and 
R. B. Lulham ... ... ... ... ... ... 1 
Residual Vitality: an outline Sketch of our Knowledge of 
the Physiology of the Sub-normal cell—F. F. 
Blackman ... ... .. ... ... ... 33 
Reviews :— 
R. Pilger, Taxaceae in Das Pflanzeureich (W.C.W.) 27 
F. G. Kohl, Ueber die Organisation und Physiologie 
der Cyanophyceenzelle und die Mitotische Teilung 
ihres Kernes (K. Miyake) ... ... ... ... 106 
J. C. Willis, A Manual and Dictionary of the Flowering 
Plants and Ferns ; Second edition (Ed.) ... ... 129 
A. B. Rendle, The Classification of Flowering 
Plants (Ed.) ... ... ... ... ... ... 130 
H. Matte, Recherches sur l’appareil libero-ligneux 
des Cycadacees (W. C. Worsdell) ... ... ... 247 
