164 



DESIGN IN NATURE 



PLATE LXV 



PLATE LXV {continued) 



Fig. 22.— Spherical pollen of Sherardia arrensis. a, Side view ; b, end view ; c, as moistened hy water. Shows i-adiatmg, 

 symmetrical arrangements of parts. 



Fig. 23.— Spherical pollen of GacurUta Pepn as seen in water. Shows conical spines and pores. 



Fig. 24.— Compound pollen of Acacia laxK, with parts symmetrically grouped. 



Fig. 25. — Spermatozoid from the antheridium of Gliara frarjilis. Shows spiral ari'angement. The spermatozoids are capable of 

 independent movements. 



Fig. 26. — Spiral spermatozoids from the antheridium of Polylrichum commune. 



YiQ, 27. — Spermatozoids from the antheridium of Marcliavtia polymorpha, in the coiled and uncoiled state. 



Fig. 28. — Beautiful spiral spermatozoids from the antheridium of a fern {Gymnorjramma), in the coiled and uncoiled condition. 



Fig. 29. — Beautifully marked pollen of chicory (Cicliorinm Iiiiiihm). Shows concentric and radiating arrangement. 



Fig. 30. — Reticulated pollen of Sonchiis imlnslris (side and end views). 



Fig. 31. — Spiral fibrous cells of the sporangium of Mairhaniia polymorpluL. 



Fig. 32. — Granulated pollen with pores of Statice linifolia (end and side views). 



Fig. 33. — Double spiral fragments of elater of Marchantia 'polymorph 11, middle (k), and end portions (b). 



Fig. 34. — a, Portion of a section of a cell of rice, e.\;hibiting very minute starch grains tirmly compacted as in maize; b, portion 

 of the same magnified. Reveal hexagonal forms as in liver cells, pigment cells, epithelium cells, &c. 



Fig. 35. — Grain of potato starch showing concentric and radiating arrangement around hiluni. 



F^iG. 36. — Starch grains from haricot-bean. Display concentric arrangements. 



Fig. 37. — Portion of pollen of Kuellia furmosa showing hexagonal arrangement of parts. Compare with Fig. 34. 



Fig. 38. — Pollen grain with tube upon the stigmatio papillae from Ijathrsea sciuamaria. 



Fig. 39. — Elater of Frullania dUntata revealing single spiral formation. 



Fig. 40. — Elateis (a), and spores Qi), of Trichin. The elaters display complicated triple spiral arrangements. 



Fig. 41. — Fragment of same elaters greatly magnified showing the remarkable triple spiral arrangement more clearly. 



Fig. 42. — Elater of Mnrchanlia polymorpha provided with a beautiful single open spiral. 



