This came to the notice of Arnold Escher von der Linth, to whom Heim was indebted for much encouragement and geological instruction in the field.

He traced the plications from minor to major stages, and illustrated the remarkable foldings and overthrust faultings in numerous sections and with the aid of pictorial drawings.

[3] His initial misinterpretation of the Glarus Alps as resulting entirely from folding rather than from a major thrust fault, an error which he acknowledged in 1901, did not detract measurably from his considerable contributions.

[4] His work, Mechanismus der Gebirgsbildung (1878), is now regarded as a classic, and it served to inspire Professor C Lapworth in his brilliant researches on the Scottish Highlands (see Geol.

The Wollaston medal was awarded to him in 1904 by the Geological Society of London,[3] and in 1905 he was made a member of the Royal Swedish Academy of Sciences.