XXX LIST OF ILLUSTRATIONS 



PAGE 



(3) Branch of Xo. 1, first series showing cork formation in stimulated 

 part 589 



435. Plant No. 8, first series, showing old and new proliferations on the main 



axis 591 



436. A. Plant Xo. 8, first series, third branch, showing proliferous and 



non-proliferous internodes; B. Plant No. 9, first series, whole of main 

 axis with two stimulated proliferous internodes; C. Shoot arising from 



a trichome 592 



437- Plant No. 3, second series, main axis, showing dwarfing of proliferous 

 leaf (M), adventive shoots on middle internodes, cork formation 

 (Ck), etc. . . 594 



438. Plant No. 9, second series, petiole and upper face of leaf M, blade 



proliferations mostly from the midribs 596 



439. A. Plant No. 9, first series, part of an internode enlarged with cork at 



C; B, Plant Xo. 9, second series, petiole enlarged. Both very pro- 

 liferous 598 



440. A. Plant X T o. 10, second series, main axis, contrasting, especially, big 



proliferous and non-proliferous leaves; B. Cross-section of a petiole- 

 trichome showing a bud arising from it 602 



441. Plant X'o. 10, second series: middle back part (center) of proliferous 



leaf blade J of fig. 440, enlarged 604 



442. Plant Xo. 10, second series, middle leaf, from a branch showing effect of 



vicinity of midribs on number and size of the adventive shoots 605 



443. Plant Xo. 15, second series, main axis, upper face of leaf-blade L and 



its petiole, full of adventive shoots 606 



444. 1, 2. Plant Xo. 18, second series, main axis, upper and lower part of the 



proliferous internode, enlarged 60S 



445. Plant Xo. 1, third series of dried cuttings. Ck, cork; Tp, topmost 



small leaf when cutting was made; A', fallen leaf; Y, proliferous 

 leaf; St, stipules. Proliferous leaf Y is dwarfed 610 



446. Plant Xo. 1, sixth series of cuttings, third, fourth and fifth leaves from 



the top. Stimulated proliferous leaf not dwarfed 611 



447. Parts of leaves enlarged showing leafy shoots originating from the edge 



of knife wounds and needle pricks 613 



448. A. Shoots arising from knife-slit in lower surface of a midrib; B, effect 



of dwarfing on limitation of production of shoots from edges of wounds; 



C, two abnormal fused leaves from an adventitious shoot 614 



449. 1, 2. Petioles developing adventive shoots from trichomes. 3. Stimu- 



lated internodes which have developed adventitious shoots and cork 

 formation. (PI. No. 6, first series.) 4. Same as 1 and 2. 5. Midrib- 

 trichomes developing shoots 616 



450. A, B, C. Further evidence of the development of shoots from petiole 



hairs 617 



451. A. Cross-section of a leaf and, B, cross-section of an internode, showing 



superficial origin of the adventive shoots 618 



452. Abnormal leaves from adventive shoots: also stem-glands (x, y) giving 



rise to shoots 620 



453. Like 451A but an earlier stage of shoot-development from the epidermal 



region (x, //) 621 



