VI 
INDEX OF AUTHORS. 
Page 
Brenchley, Winifrid E. The Effect of Weeds upon Cereal 
Crops ... ... ... ... 53 
Brown, William. On the Physiology of Parasitism ... 109 
Davey, A. J., and Gibson C. M. Note on the distribution 
of sexes in Myrica Gale (Plate I 
and 1 Text-fig.) ... ... ... 147 
Drabble, E. and H. The Syrphid Visitors to Certain 
Flowers ... ... ... ... 105 
Dufrenoy, Jean. The Endotrophic Mycorhiza of Ericaceae 
(4 Text-figs.) ... ... ... 222 
F(ritsch), F. E. Cambridge Botanical Text Books, Vol. I. 
Algae (Myxophycese Peridineae, 
Bacillarieae Chlorophyceae). By 
G. S. West [Review] ... ... 48 
Gibson, C. M., see Davey, A. J. 
Grove, W. B. Rhizophidium acuforme Zopf. (Fisch) 
(1 Text-fig.). 177 
n ,, Note on Pleodorina illinoiensis ... ... 180 
Hodgetts, W. J. On the forcible discharge of spores of 
Leptosphceria acuta (15 Text-figs.) 139 
Jorgensen, Ingvar, and Stiles,Walter. Carbon Assimilation: 
A review of recent work on the 
pigments of the green leaf and the 
processes connected with them :— 
Chapter VI. Energy relations in carbon 
assimilation— 
A. General remarks ... ... ... 24 
B. Quantitative estimation of carbon 
assimilation by means of the pro¬ 
ducts ... ... ... ... ... 25 
C. Quantitative determination of the 
iieat of combustion of the products 
of assimilation ... ... ... 30 
D. Q uantitative measurement of the 
radiant energy incident on the leaf 
and the utilisation of this energy ... 31 
E. Assimilation in relation to radiant 
energy of different wave lengths ... 40 
Chapter VII. Theories of Carbon Assimila¬ 
tion— 
A. General Remarks ... .✓. ... 77 
B. Hypothesis of Baeyer ... .. 78 
