PLATE XIII. 



Fig. 53. Cross section of stem of No. 1, current year; v, pith; w, 

 xylem; x, pholem; y, bast. X 23. 



Fig. 54. Cross section of stem of No. 2, current year; v, w, x, y, 

 same as in Fig. 53. X 23. 



Fig. 55. Cross section of stem of No. 3, current year; v, w, x, y, 

 same as in Fig. 53. x 23. 



Fig. 56. Cross section of stem of No. 4, current year; v, w, x, y, 

 same as in Fig. 53. x 23. 



Fig. 57. Tangential section of wood, showing size and frequency of 

 medullary rays, No. 1. X 53. 



Fig. 58. Tangential section of wood, No. 2. x 53. 



Fig. 59. Tangential section of wood, No. 3. x 53. 



Fig. 60. Tangential section of wood, No. 4. x 53. 



