Fig. 10From: The interaction of water with archaeological and ethnographic birch bark and its effects on swelling, shrinkage and deformationsMass loss and labelled deformations detected with time-lapse photography during de-humidification from 97 to 54% RH on a sample from material C, ethnographic. a Detail of the first 35 min, b mass loss over the whole 26 h periodBack to article page