191. "Facts and Considerations on the Strata of Mont Blanc, and on Some Instances of Twisted Strata Observable in Switzerland" (prose), March, no ms; printed Works 1:194–96.
	Along with “Enquiries on the Causes,” listed as no. 1 in R. H. Shepherd, Bibliography of Ruskin . . . (from 1834 to 1879), pp. 1–2; R. H. Shepherd, Bibliography of Ruskin . . . (from 1834 to 1881), p. 1. Hence these two prose pieces considered as earliest publications.

	Ruskin's second paper for Loudon is dated March, although it was not published until the December issue of volume vii of the Magazine, pp. 644–45; see no. 190.