See the paper 'On Liquid Diffusion as applied to Analysis,' by the Master of the Mint (Phil. Trans. 1861, p. 222).
Compare the description of one of the hollow stalagmites I explored in the Schafloch, p. 145.
Professor Tyndall has pointed out that, owing to the want of perfect homogeneity, some parts of a block of ice exposed to a temperature of 32° F. will melt, while others remain solid (Phil. Trans. 1858, p. 214). He also arrived at the conclusion (p. 219) that heat could be conducted through the substance of a mass, and melt portions of the interior, without visible prejudice to the solidity of the other parts of the mass.
Journal des Mines, xxxiii. 157. See also an English translation of his account in the second volume of the Edinburgh Journal of Science.
It is to be hoped that the accuracy of his scientific descriptions exceeds that of his topographical information; for he states that the glacière is two leagues from Valence, whereas it cost me six hours' drive on a level road, and five and a half hours' walking and climbing, to reach it from that town.