x LIST OF ILLUSTRATIONS 



FIG. 



29. Single fructification of Fomes annosus. Upper surface facing page 85 



OA Lower surface 85 



oU. ,, M 



31 Fomes annosus. Annular rot with a central unrotted 



core . . ... V-. . . . ' 92 



32. Fomes annosus. Figured rot . - . . . 92 



33. Black specks in wood of larch caused by Fomes annosus . page 94 



34. Transverse section of black speck in wood of larch . 96 



35. Longitudinal section near edge of black speck . . . 97 



36. Fomes annosus. Figured arrangement of rot . . facing page 99 



37. M Base of larch trunk excavated 



underneath ,> 99 



38. Fructification showing pores in 



longitudinal section . . . 101 



39. Under surface of fructification 



showing mouths of pores . 101 



40. Upper surface of fructification showing concentric 



furrows and white margin ...... 101 



41. Fomes annosus page. 102 



42. Diagram showing necessity for pores to be vertical . . 103 



43. Fomes annosus. Conidiophore and conidia . . 105 

 44,45. Cultures of Fomes annosus . . . .facing page 108 



46. Polyporus Schweinitzii. Stipitate fructification . 127 



47. Bracket-shaped fructification 127 



48. Hymenial layer of Polyporus Schweinitzii . . . page 128 

 49,50. Sections of larch-tree showing rot caused by 



Polyporus Schweinitzii facing page 128 



51. Piece of larch wood rotted by Polypor us Schweinitzii ;, 130 



52. Section of Scots pine stem with rot caused by Poly- 



porus Schweinitzii . . . . . ,,130 



53. Mycelium of Polyporus Schweinitzii in wood of larch . page 131 



54. Section of larch wood after attack by Polyporus Schweinitzii 132 



55. Poria vaporaria ......... 136 



56. 57. Sections of larch wood rotted by Trametes Pini . facing page 143 

 58, 59. ArmiUaria mellea. Group of toadstools growing 



from base of deodar . . 145 

 60, 61. Toadstools growing from rhi- 



zomorphs in soil . . 146 



