44 



Phnto)uicr(irrnip]is of Botiiiilcnl Sliiclir.-i. 



66.— R.L.S. Stem (Timber), " Pinus sylvestris," Common pine. 



ledullary rays. 



Bordered pits. 



Cell-wall in radial view. 



67. ~T.L S. Stem (Timber) " Pinus sylvestris/' Common pine. 



3— Medullary ray in section. 



if— Bordered pits in sections. 



Cell-wall in tangential 

 view. 



