266 PROCEEDINGS OF THE SOCIETY. 



36. Longitudinal section of apex of stem passing through apical cell. 



37. Transverse section of stem of Wheat. Hollow type. Cut T l- T 

 Stain, carmine and green. 



38. Transverse section of stem of Wheat. Solid type. Cut ^J^ 

 Stain, carmine and green. 



39. Entire flower of Wheat. Stain, carmine, x 10 diam. 



40. One shaft of stigma of Wheat, covered with pollen-grains. One 

 pollen-tube penetrating stigma. 



41. The same pollen-tube more highly magnified. 



42. Longitudinal section of a grain of Wheat (unstained). Cut ^J^ 



43. Transverse section of portion of above, more highly magnified. 



44. Longitudinal section of embryo of Wheat. Cut T2 V^ Stain, 

 brazilin. 



45. Plumule of last slide, more highly magnified. 



46. Radicle of same, ditto. 



47. Embryo-sac, with suspensor cells, of Wheat, before fertilisation. 



48. The same, after fertilisation. Showing disposition of cells to 

 form new grain. 



49. Transverse section of leaf of Orchis, Cypripedium sp. Cut -j^ 

 Stain, carmine and green. 



50. Transverse section of leaf of Pine, Pinus sp. Cut ^^ Sto- 

 mata, resin passages, etc. 



51. Cuticle of leaf of Araucaria imbricata. Stained with brazilin. 



52. Sting from midrib of young Nettle. Stain, carmine and green. 



53. Transverse section of phylodium of Acacia decurrens (Wattle 

 Bark). Cut 7 oW Stain, aniline-picrate and gossypimine. 



54. Transverse section of leaf-bud of Beech-tree (celloidinised). 

 Cut -t-jtj- Showing arrangement of leaves in embryo. 



55. Transverse section of leaf-bud of Ash-tree (celloidinised). Cut 

 r; J-tf. Showing arrangement of young leaves, leaf -scales, etc. 



56. Transverse section of leaf-bud of Sycamore (celloidinised). Cut 

 T £ 7 . Showing arrangement of leaves in embryo. 



57. Longitudinal section of stem, leaf -stalk, and leaf -bud of Syca- 

 more. Cut ^--J-jj Stain, carmine and green. Showing the "absciss 

 layer " of cork-cells, cutting of the leaf -stalk. 



58. Transverse section of flower-bud of Poppy, Papavcr rhaas (cel- 

 loidinised). Cut ^o Passing through base of stigmatic cap and apex 

 of ovary. 



59. Flower of Dandelion. Showing bud in dotted outline, — the 

 stage from which sections are prepared. 



60. Transverse section of flower-bud of Dandelion (prepared by the 

 celloidinising method). Cut T ^ Stain, carmine. The fine un- 

 stained elements surrounding the florets is the pappus. Note the 

 unlocking of the surrounding bracts, by the expansion of the bud x on 

 slide. 



Prof. A. E. Wright. — Diagram : Construction of the Eikonometer. 



Exhibit 1. — Arrangement for measuring the magnifying power of 

 the Microscope by means of the eikonometer. A Microscope focussed 

 upon a stage micrometer, and, placed in position on the top of the 



