y I 1 • J 
Cytology of the Uredineae, General, On the Fertilisation 
Alternation of Generations and (Prelim. Notice) 
—V. H. Blackman 
Ecological Surveying, A Second Experiment in 
Ecology, The Problems of—A. G. Tansley ... 
Erysiphaceae, On the specialisation of Parasitism in the, II. 
—E. S. Salmon 
Erysiphaceae, Recent Researches on the Specialisation of 
Parasitism in the, (Figs. 63-65) 
Fern-Sporangium, Germinating spores in a Fossil (Figs. 
6061)—D. H. Scott 
Ferns, On the Arrangement of the Vascular Strands in 
the Seedlings of certain Leptosporangiate (preli¬ 
minary notice)—S. E. Chandler 
Ferns. The Vascular system of the Rhizome and Leaf- 
Trace of Pteris aquilina L. and Pteris incisa Thunb. 
var. integrifolia Beddome (Figs. 1-59)—A. G. 
Tansley and R. B. Lulham 
Fertilisation, Alternation of Generations and General 
Cytology of the Uredineae, on the (preliminary 
notice)—V. H. Blackman 
Fertilisation, “ Apogamy ” and Parthenogenesis, On the 
Relation of—V. H. Blackman 
Fertilisation, The Sexual Organs and (Studies in the 
Morphology of Torreya califorrticaTovrey. II.) Plates 
VII.-IX.—Agnes Robertson 
Floral Anomalies in Species of Cerastium, Note on (Figs. 
81-84)—L. S. Gibbs . 
Flowering Plants, The origin of—M. Benson 
Flowers, Insect-Attractions in—H. N. Ridley 
Flowers, What part does Colour play in the attraction of 
insects to ?—A.G.T.— 
Germinating Spores in a Fossil Fern-Sporangium (Figs. 
60-6i)—D. H. Scott ... 
Heterocysts (see Anabaena) ... 
Heterotype Karyokinesis and its Significance 
Hypocotyl, Root-Structure in the Central Cylinder of the 
—A. G. Tansley and E. N. Thomas ... 
Illumination, Facts and Theories concerning the Adapta¬ 
tions of Plants to differences of (Chromatic 
Adaptation)—F. F. Blackman 
Insect-Attractions in Flowers—H. N. Ridley 
Insects, attraction of to flowers, What part does Colour 
play in the—A.G.T. ... 
Infection-Experiments with various Uredineae, Notes on 
(Plates V. and VI.)—C. M. Gibson. 
Infection (see Erysiphaceae). 
Karyokinesis, Heterotype, and its Significance 
Leptosporangiate Ferns, On the Arrangement of the 
Vascular Strands in the Seedlings of certain 
(Preliminary Notice)—S. E. Chandler 
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