Note 27 — FACTS AND CONSIDERATIONS ON THE STRATA OF MONT BLANC, AND ON SOME INSTANCES OF TWISTED STRATA OBSERVABLE IN SWITZERLAND.[27]
Reading edition
London's Magazine of Natural History, Vol. vii., pp. 644-5. The note was illustrated by engravings from two sketches by the author of the Aiguille de Servoz and of the Aiguille Dru, and by a diagram explanatory of its last sentence but one.—Ed.