Photoinici'tii^raphs of Botanical Studies. 



43 



64.— T.S. Mature Ovule, " Pinus sp.," Pine Tree. 



Wall of ovule. 



J<^ Developing leaves. 





Vascular bundle of leaf. 



65. -T.S. Stem (Timber), "Pinus sylvestris," Common Pine. 



Spring growth of wood. 



Autumn and winter 



growth. 



Resin Canal. 



