To express the experience in applying different techniques for waterlogged wood conservation it is necessary to give not only a qualitative description but a quantitative estimate of the results as well. These include indices of shrinkage and the degree of filling the pores with a conserving substance in every article. When it is impossible to take samples for examination, some indirect methods to evaluate the water content and the degree of filling the pores of the wood with a conserving substance are suggested, using the data on weighing the article in the water-saturated state before treatment, then after impregnation with a conserving solution and again after drying. Some formulae are given for cases when the conserving substance density is greater than that of water.