viii 
Figures. 
Index . 
34-37* 
3 8 , 39- 
40-43- 
44, 45* 
1. 
2 . 
3* 
4* 
5* 
6 . 
7* 
8 . 
1. 
2 . 
3* 
4, 5* 
I, 2. 
3* 
4, 5* 
6, 7. 
8 . 
9, io. 
II, 12. 
13 , 14 - 
J 5* 
16, 17. 
Equisetum debile (Kashyap) 
Cycadean petioles (Le Goc) 
Trigonocarpus (Arber) 
Some studies on yeast (Brown) 
„ „ » 
», ,, „ 
,, ,, ,, 
,, », ,» 
>» ,, ,» 
„ >, ,, 
Medullosa centrofilis (de Fraine) 
,, », ,, 
,, ,, ,, 
On the action of zinc sulphate (Brenchley) 
,, ,, ,, ,, 
,, ,, ,, ,» 
,, ,, arsenious acid (Brenchley) 
„ „ arsenic acid (Brenchley) 
„ „ sodium arsenite (Brenchley) 
,, ,, ,, ,, ,, 
„ „ „ arsenate (Brenchley) 
,, „ boric acid (Brenchley) 
Diagram 1. Types of venation in the cotyledons in 
(Lee) 
Diagram 2 . Solidago ulmifolia (Lee) 
Diagram 3. Charieis heterophylla (Lee) . 
Diagram 4. Silphium perfoliatum (Lee) . 
Diagram 5 . Heliopsis laevis (Lee) . 
Diagram 6. Leptosyne Douglasii (Lee) 
Diagram 7. Bidens pilosa (Lee) 
Diagram 8 . Tridax procumbens (Lee) 
Diagram 9. Silybium Marianum (Lee) 
Diagram 10. Dimorphotheca pluvialis (Lee) 
Dimorphotheca pluvialis (Lee) . 
Diagram 11. Hieracium alpinum (Lee) 
Some of the seedlings used in the present paper (Lee) 
A sectional elevation of a Van Tieghem cell (Robinson) 
Sporidia of Puccinia malvacearum (Robinson) 
Conidia of Botrytis (Robinson) 
Sporidia of Puccinia malvacearum (Robinson) 
A new Araucarioxylon from New Zealand (Stopes) 
Anomalous bulbils in a lily (Green) 
Matteuccia intermedia (Bower' 
Blechnum tabulare (Bower) 
the Compositae 
PAGE 
175 
176 
177 
178 
190 
195 
200 
205 
206 
207 
210 
211 
214 
222 
252 
255 
257 
260 
285 
286 
287 
289 
290 
291 
292 
293 
295 
296 
3°5 
307 
307 
309 
310 
312 
313 
3 T 5 
318 
318 
319 
322 
327 
332 
333 
335 
336 
337 
338 
338 
342 
344 
346 
356 
357 
369 
37 + 
