Note 65 — III.
Reading edition
Several observers consider evaporation as more or less of a factor in the production of cold underground. It is suggested also, that in certain cases, at high altitudes, evaporation tends to prevent the melting of the ice in windholes, but this is not proved, as yet. See Part IV.: De Saussure, page 274; Fugger, page 296; Trouillet, page 298; Martel, page 300; Lohmann, page 302.