The anatomy of two bamboo species, Arundinaria falconeri and Sinobambusa tootsik was investigated to know the effect of anatomical features on the pattern of preservative penetration inside the culm cells of these species. The study indicates that in bamboos the most advantageous pathway for the longitudinal flow of preservative liquid is through the vessels. The parenchyma aids in only to lateral flow. Vascular bundles of both the species fall under type-1 of the four types categorised by Grosser and Liese.