X 
Index . 
Figures. 
page 
i. Restoration of female cone of Williamsonia gigas with the front bracts 
removed. 2. The same in section (E. A. N. Arber) . . . 1 75 
3. Restoration of male cone of Williamsonia gigas. 4. The same in section 
(E. A. N. Arber) 176 
5. Outline of the ‘ pyriform axis’ (androphore) of a male cone of William- 
sonia gigas (after W. C. Williamson) (E. A. N. Arber) . . 177 
1. A New Auxanometer (Haines) 182 
2. „ ,, (Haines) 184 
1. a. Longitudinal section of root and young nodule of Alnus. b. Trans- 
verse section of nodule of Alnus. c. Longitudinal section of part of 
old branched nodule of Alnus (Spratt) 190 
2. a. Longitudinal section of nodule and root of Lupin, b. Longitudinal 
section of an older nodule (Spratt) 192 
3. Longitudinal section of nodule and root of Spartium (Spratt) . .193 
4. a. Longitudinal section of nodule and root of Phaseolus. b. Longitudinal 
section of old nodule and root of Lotus corniculatus (Spratt) . 193 
5. Longitudinal section of nodule and root of Sophora (Spratt) . *195 
1 . Cross-section of Linnaea leaf, showing starch in material exposed to 
higher temperature for one week. Section treated with chloral 
hydrate and iodine (Tuttle) 204 
2. Horizontal section of Linnaea leaf, showing starch in epidermal cells. 
The material had been exposed to higher temperature for one week. 
Section treated with chloral hydrate and iodine (Tuttle) . .204 
3. Horizontal section of Linnaea leaf, showing oils and fat in epidermal 
cells. Material fresh from outside before exposure to higher tempera- 
ture. Section treated with 1 per cent, osmic acid (Tuttle) . . 205 
4. Linnaea material exposed to higher temperature for four days, sections 
of which were treated with chloral hydrate and iodine (Tuttle) . 203 
5. Cross-section of Linnaea leaf, showing fats and oils before exposure to 
higher temperature. Section treated with 1 per cent, osmic acid 
(Tuttle) 206 
6. Cross-section of Linnaea leaf, showing decreased fat and oil content. 
Material exposed to higher temperature for one week. Section 
treated with 1 per cent, osmic acid (Tuttle) .... 206 
7. Cross-section of Linnaea leaf. Material outside for reconversion during 
extremely low temperature. Section treated with iodine solution 
(Tuttle) 207 
Observations on the Anatcmy of Ash- wood with reference to Water- 
conductivity (Holmes) — 
1. Specimens A 8, A 8 a, A 8 b, A 8 e (Holmes) . . . *256 
2. Specimens A 3, A 4, A 6, A 8 a, A 8 b, A 8 e (Holmes) . . . 257 
3. Specimens A 3, A 4, A 6 (Holmes) 257 
4. Specimen A 3 (Holmes) . 258 
5. Specimen A 4 (Holmes) . . . . . . . . . 259 
6. Specimen A 6 (Holmes) ......... 260 
7. Specimens A 8, A 8 a, A 8 b } A 8 e (Holmes) 261 
Map of New Zealand and outlying islands (Willis) .... 267 
Map of New Zealand and islands to show imaginary distribution from 
Auckland and Dunedin (Willis) 268 
Micrasterias apiculata, (Ehrenb.) Menegh (Carter) .... 300 
Diagram showing frequency curve and yield in grammes per day of 
1,011 seven-year-old Hevea brasiliensis (Whitby) . . . 317 
1. The growing apex of the thallus. a. Apical cell of a young assimilative 
branch, b. Lateral budding to form a new branch, c. Terminal cell 
of a central strand filament (Cleland) 325 
2. Method of growth in a vegetative tuft. a. Lateral budding to form 
