VIU 



LIST OF ILLUSTRATIONS. 



28. 

 29. 

 30. 

 31. 

 32. 

 33. 

 34. 

 35. 

 36. 

 37. 



40. 



41. 



42. 



43. 



44. 



45. 



46 



47. 



48. 



49. 



50. 



51. 



52. 



53. 



54. 



55. 



56. 



57. 



58. 



59. 



60. 



61. 



62. 



Fruit Dot, — side view .... 



Flowering Fern 



Camptosorus or Walking-Leaf Fern 



Schizaea 



Club Moss . . ... 

 Equisetum or Scouring Rush 



Apple Flowers 



Anther 



Flowers of Marsh-Marigold, — "Cowslip " 

 Pods of Marsh-Marigold .... 



Morn ing-G lory 



Mint Flower 



Flower of Ash 



Staminate Flower and Catkin of Willow . 



Pistillate Flower and Catkin of Willow . 



Section of Corn-Stalk 



Section of an Oak Trunk 



Section of Cherry Flower .... 



Section of Apple Flower .... 



Section of Strawberry' Flower . 



Section of Rose Flower with Petals removed 



Flower of Wild Aster .... 



Section of a Head or " Flower" of Coreopsis 



The Two Kinds of Florets in the Coreopsis 



Anthers of a Composite .... 



Floret of Canada Thistle . 



Fruit of Beggar' s-Ticks, showing Pappus 



Fruit of Dandelion with Pappus 



Involucre of a Composite 



Head of Burdock 



Pith Cells 



Wood Cells 



Vessels .... 



Hairs from Pumpkin- Vine 



One-Celled Hairs . 



Outlines of Epidermal Cells 



Cross-Section of a Leaf . 



Stomata 



A Pollen Tube. Pollen Tubes entering a Stigma 



25 

 26 

 27 

 27 

 28 

 28 

 29 

 30 

 31 

 32 



33 

 34 

 37 

 37 

 55 

 56 

 56 

 58 

 61 

 62 



63 

 64 

 64 

 64 

 64 

 70 

 70 

 71 

 71 

 71 

 72 

 72 

 72 



