This paper illustrates the topics on moisture within the timber and moisture removal from the timber. In the topic moisture within the timber. The characteristics such as (1) principal fluid parts in wood (covering the structure of different cells and their alignment), (ii) pit pairs (covering the structure, function and the process of fluid flow through pit connection etc), (iii) principles of capillary tension in wood (equations for capillary tension), (iv) generalized understanding of capillary (free) water in wood (fluid flow), (v) capillary tension, pit openings elevated temperature and resulting aollapse (the possible factors responsible for collapse), (vi) pit aspiration and case hardening (the mechanism of pit aspiration due to capillary action) and (vii) general understanding of bound water in wood (physical and mechanical changes at fiber saturation point and equation for water-vapour difference coefficient). The process of moisture removal from timber. Kiln drying procedure and technique (kiln designing parameters, kiln specifications, control of drying process, computation of kiln data etc.) are also discussed in this paper.