DESCRIPTION OF PLATES. 



PLATE 1. 



a. Pinus protoscleropitys, transverse section of wood. X 40. 



b. Same, transverse section near pith. X 15. 



c. Same, radial section. X 40. 



d. Same. X 80. 



e. Same, tangential section of wood. X 40. 

 /. Same, showing leaf trace. X 60. 



PLATE 2. 



a. Same, radial section, showing ray pitting. X 150. 



b. Same. X 500. 



c. Same, showing ray tracheides. X 150. 



d. Same. X 500. 



e. Same, showing teeth in tracheide. X 500. 



/. Same, showing radial pitting of tracheide. X 600. 



PLATE 3. 



a. Pilyoxylon foliosum, transverse section of wood. X 40. 



h. Same, transverse section at pith. X 12. 



c. Same, radial section of wood. X 40. 



d. Same, radial section at pith. X 12. 



e. Same, tangential section of wood. X 40. 



/. Pilyoxylon anomalum, transverse section at pith. X 12. 



PLATE 4. 



o. Same, transverse section of wood. X 40. 



b. Same, tangential section of wood. X 40. 



c. Pinus protoscleropitys, tangential section including short shoot. X 15. 



d. Same, including leaf trace and short shoot, cut nearer pith. X 12. 



e. Pilyoxylon anomalum, tangential section, including short shoot. X 15. 

 /. Same, radial section of wood. X 40. 



g. Same. X 80. 



