688 Lewis.— The Life History of Griffithsia Bornetiana . 
PLATE L (Figs. 27-54). 
Figs. 27-31. Stages in mitosis of nuclei from male plant, x 3600. 
Figs. 27, 28, prophases ; 29, 30, polar view of equatorial plate at metaphase; 31, metaphase. 
Fig. 32. Surface view of chromatophores, showing arrangement ; one nucleus in the field. 
X 1200. 
Fig. 33. Dividing chromatophores. x 3600. 
Figs. 34-41. Stages in cell-division, longitudinal sections, x 330. 
Fig. 34, accumulation of protoplasm in tip of the cell ; 35, formation of dome-shaped mem- 
brane ; 36, beginning of vacuole ; 37, slightly older stage ; 38, small 2 -celled lateral branch, with 
neighbouring hair; 39, beginning of formation of ring-shaped constriction; 40, 41, stages in 
ingrowth of ring-shaped partition. 
Fig. 42. Hair-like organs of different ages side by side. X 330. 
Fig. 43. Same after older hair has elongated, x 125. 
Fig. 44. Three rhizoids on single cell, longest one toward base of cell. X 30. 
Fig. 45. Tendril-like rhizoid twining around support, x 45. 
Fig. 46. Rhizoids connecting neighbouring cells, x 15. 
Figs. 47-50. Stages in regeneration, showing how continuity is restored in filament upon the 
death of a cell, x 30. 
Fig. 5T. Young attaching disk, attaching cells shaded, x 30. 
Fig. 52. Older stage of same, x 15. 
Fig. 53- Surface view of young antheridial branch, with hair. Antheridial papillae cover tip 
of apical cell, x 1 30. 
Fig. 54. Longitudinal section of apical cell bearing antheridial papillae, x 350. 
PLATE LI (Figs. 55-89). 
Fig. 55. Antheridial papillae cut off from mother-cell. X 1200. 
Figs. 56, 57. Division of antheridial papillae, x 1800. 
Fig. 58. Antheridial papillae lying in swollen wall of mother-cell, x 1800. 
Fig. 59. Same, after division of the papillae, x 350. 
Figs. 60, 61. Stages in formation of antheridial filaments, x 1800. 
Figs. 62, 63. Antheridial filaments with mature spermatia. x 1200. 
Figs. 64, 65. Formation of new antheridial branches after terminal cell has ceased to produce 
antheridia. x 20. 
Fig. 66. Surface view, to show 2-celled procarp ; the small apical cell has been pushed to one 
side, x 100. 
Fig. 67. Longitudinal section of similar stage, x 500. 
Fig. 68. Longitudinal section of 3-celled procarpic branch, x 500. 
Fig. 69. Surface view, showing first peripheral cell, x 500. 
Fig. 70. Surface view, showing second peripheral cell, x 500. 
Fig. 7 1 . Surface view of later stage ; 3-celled carpogenic branch shaded, x 500. 
Fig. 72. Procarpic branch metamorphosed into vegetative shoot; on either side are ordinary 
vegetative branches, x 150. 
Fig. 73. Almost mature procarp ; carpogenic branch shaded, x 500. 
Fig. 74. Section of very young carpogonium. x 1800. 
Fig. 75. Mature procarp ; spermatium attached to tip of trichogyne. x 500. 
Fig- 76. Longitudinal section of procarp of same age as in Fig. 71. x 500. 
Fig. 77. Neighbouring longitudinal sections of mature procarp ; two spermatia attached to 
trichogyne ; two male nuclei in trichogyne. x 500. 
Fig. 78. a. Longitudinal section through trichogyne, carpogonium, and auxiliary cell, x 500. 
b. Tip of same trichogyne. x 1 800. 
Fig. 79. Auxiliary cell and carpogonium in longitudinal section ; male nucleus entering 
carpogonium. x 3600. 
Fig. 80. Surface view from above of young cystocarp in which trichogyne has begun to wither. 
X 500. 
