VI 
INDEX OF AUTHORS. 
Page 
Acton, Elizabeth. On the structure and origin of 
“ Cladophora Balls ” (5 Text-figs.) 1 
Acton, Elizabeth. On a new penetrating alga (Plate I, 
and 2 Text-figs.) ... ... ... 97 
Bristol, B. Muriel. On the remarkable retention of 
vitality of moss protonema (3 
Text-figs.) ... ... ... ... 137 
Fritsch, F. E. The algal ancestry of the higher plants 
(2 Text-figs.) . 233 
Hodgetts, W. J. Dicranoclicete reniformis Hieron., a 
freshwater alga new to Britain (1 
Text-fig.) ... ... ... ... 108 
Jefferies, T. A. The vegetative anatomy of Molinia 
ccerulea , the Purple Heath Grass 
(9 Text-figs.) ... ... ... 49 
Jorgensen, I ngvar and Stiles, Walter. Carbon Assimilation: 
A review of recent work on the 
pigments of the green leaf and the 
processes connected with them :— 
Chapter II. The pigments of the leaf 
( continued )— 
E. Simple laboratory experiments on 
the leaf pigments ... 
11 
F. 
Variation in the quantity of the 
leaf pigments in different plants 
and under different conditions 
85 
Chapter 
III. The path of gaseous exchange 
11^7 
Chapter 
IV. The factors influencing the 
intake of carbon dioxide— 
A. 
General remarks 
131 
B. 
Temperature 
144 
C. 
Light. ... . 
156 
D. 
Carbon dioxide 
158 
E. 
Chlorophyll content 
176 
Chapter 
V. The products of carbon 
assimilation — 
A. 
General remarks 
186 
B. 
The evolution of oxygen 
186 
C. 
The carbohydrates of the leaf 
205 
