Index . 
IX 
Figures. 
A. 
B. 
1. 
2 . 
1. 
2 . 
3 - 
4 - 
I, 2. 
I. 
2-4. 
5 - 
6 - 8 . 
9 - 
1. 
2 . 
3 - 
I, 2. 
3 - 
4 - 
5 - 
6 . 
7 * 
9 - 
io. 
ii. 
J3- 
T 4 - 
15 - 
page 
Thyrsopteris elegans (Bower) ........ 456 
Neocheiropteris palmatopedata, (Bak.) Christ (Bower) . . -474 
Sebaea (Hill) 483 
Sebaea aurea (Hill) 486 
Parnassia palustris, L. (Agnes Arber) 493 
A-C, Parnassia fimbriata, Banks; D-F, Parnassia palustris, L. 
(Agnes Arber) 496 
Parnassia palustris (Agnes Arber) 504 
A, Hypericum sp. (? olympicum) ; B-F, Hypericum elodes, Huds. 
(Agnes Arber) 506 
Welwitschia mirabilis (Takeda) . 549 
)} » )> ....... 55 ° 
Apparatus of Bonnier and Mangin for the Analysis of Air (Thoday) 567 
Reagent tubes (Tho day) 571 
Larix europaea, DC. (Bartlett) -575 
Tetraclinis (Saxton) 586 
,, ,, ......... 59 1 
>, „ 59 6 
» ,, ......... 597 
Part of a map of the world, showing the distribution and suggested 
phylogeny of the Callitro'ideae and of certain Cupresso'ideae 
(Saxton) ..... 599 
Utricularia ochroleuca (Gluck) 610 
Utricularia intermedia (Gluck) 61 1 
Utricularia minor forma platyloba (Gluck) . . . . ,614 
Diagrammatic representations of the last year’s growth of the two 
uppermost sections of the same tree (PIarper) . . . -633 
Plan and sectional elevation of leaf chamber (Thoday) . . . 699 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment I (Thoday) 700 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment II (Thoday) 701 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment III (Thoday) 702 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment IV (Thoday) 703 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment V (Thoday) 704 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment VI (Thoday) 705 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment VII (Thoday) 706 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment VIII (Thoday) 707 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment IX (Thoday) 707 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment X (Thoday) 708 
Curves showing total 0 2 absorbed and C 0 2 produced after chloroform 
by leaves of Helianthus tuberosus in c.c. per gramme of fresh weight. 
Experiment XI (Thoday) 710 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment XII (Thoday) 71 1 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment XIII (Thoday) . . . . . . . .712 
Rates of absorption of oxygen and evolution of C 0 2 per hour per leaf. 
Experiment XIV (Thoday) 
b 
713 
