PAGE 
CONTENTS. 
Sargant, Miss E.— A Theory of the Origin of Monocotyledons, 
founded on the Structure of their Seedlings. With Plates 
I-VII, and ten Figures in the Text ...... i 
Darwin, F., and Pertz, Miss D. F. M— On the artificial Produc- 
tion of Rhythm in Plants. With a note on the position of 
maximum heliotropic stimulation. With four Figures in the 
Text 93 
Salmon, E. S.— A Monograph of the Genus Streptopogon, Wils. 
With Plates VIII, IX, and X . . . . . .107 
Marloth, R. — Some recent Observations on the Biology of Roridula. 
With a Figure in the Text 151 
Sprague, T. A— On the Heteranthus Section of Cuphea (Lythraceae). 
With Plate XI .159 
Barker, B. T. P.— The Morphology and Development of the Asco- 
carp in Monascus. With Plates XII and XIII . . . 167 
Vines, S. H. — Proteolytic Enzymes in Plants 237 
NOTES. 
Hill, A. W. — Notes on the Histology of the Sieve-tubes of certain 
Angiosperms 265 
Crossland, C. — Note on the Dispersal of Mangrove Seedlings. With 
a Figure in the Text 267 
Cavers, F. — Explosive Discharge of Antherozoids in Fegatella conica. 
With a Figure in the Text 270 
FRITSCH, F. E. — Algological Notes. IV. Remarks on the periodical 
Development of the Algae in the artificial Waters at Kew . 274 
Bower, F. O. — Note on abnormal Plurality of Sporangia in Lycopo- 
dium rigidum, Gmel. With a Figure in the Text . . , 278 
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