PIiotoii!ici'Of;'r(Jplis of liotaii/ciii Stiiilics. 



37 



52.— T.L.S. (Bast Area) Stem of "Tilia europoea," Lime tree. 



Bast Kbres. 



53. — T.L.S. (Wood Elements) Stem of "Tilia europoea," Lime tree. 



Connective tissue. 



Pitted vessels. 



Medullary ray. 



