In Journal of R. Geog. Soc. London—
Climatology of the Caucasus (1851), xxi. 1–12.
In Zeits. deuts. geolog. Gesell. Berlin—
Salzsee von Urmiah (1854), vi. 256.
Letter to Herr Ritter, Sept. 1859, xi. 480–84.
Letter to Herr Rose, Jan. 1860, xi. 484–86.
Das thrialethische Thermalquellen-System (1877), xxix. 820–29.
In Bull. de la Soc. de Géologie de France, Paris—
Voy. en Géorg., en Turq. et en Perse en 1862 (Tendurek Dagh) (1864) sér. 2, xxi. 213–20.
In Mitt. K. K. geog. Gesell. Vienna—