730 LEE  fOOLM ATEN OFAC OL OGNE 
exotic masses among themselves and their relative abundance 
has been expressed as well as possible. 
In this cliff zone the rounded black patches represent the 
larger cliff masses as follows: 
No. I (eastermost cliff known) = Berglittenstein cliff, in the Toggenberg 
syncline near Grabs. 
2 = Roggenstock cliff, near Iberg in Upper Sihl valley. 
3 = Laucheren-Mérdergrube cliff, near Iberg. 
4 = Schien-Griindelhiittle cliff, two masses near Iberg. 
No. 5 = Zweckenalp cliff, near Schwyz, Lake of Lucerne. 
6 = Die Mythen cliffs—three masses near Schwyz. 
7 = Buochserhorn cliffs—three distinct masses according to Heim*; 
five according to Stutz?; on Lake of Lucerne. 
No. 8 = Stanzerhorn cliff—near Lake of Lucerne. 
No. g = Giswy] cliffs—several more or less disconnected masses. 
No. 10 = Niederhorn cliffs—three small exotic masses described by Kauf- 
mann,3 near the northwest foot of the Niederhorn. 
(I may also mention here for completeness, farther to the west.) 
No. 11 = Lenk-Lauenen cliffs‘—exotic masses in the Upper Saane valley 
between Lenk and Lauenen. 
Nos. 12 and 13 — Westernmost cliff-like masses = Thénes masses — thought to 
be “cliffs,” to the southwest of the Chablais region.5 - 
In this same Thun-Rhine cliff zone are also represented, as 
well as could be in a map of this size, the distribution of the 
smaller exotic masses or “exotic blocks” (in general those 
masses that are less than 25 meters in diameter) as far as I have 
been able to determine their presence either by personal visit or, 
as in one instance (H), from the literature alone. There is 
undoubtedly much more such material in the Flysch which 
further search will reveal. The principal groups of exotic blocks 
are indicated on the map by the following letters: j 
*HEIM: Unser Wissen von der Erde, Geogr. Anstalt. Leipsic, 1889 —see map of 
Lake Lucerne. 
2Das Keupenbecken am. 4— Waldstatter See, Neues Jahrbuch, etc., 1890, II. p. 
99 ff. 
3 Beitrage z. geol. Karte der Schweiz, Vol. XXIV., pp. 282-285, 524. 
4See Berichte der Naturforsch. Geo. zur Freiburg i B., Vol. IX., No. 2, p. 122 ff. 
5 See FAVRE: Carte geol. d. voisines du Mont Blanc, Winterthur, 1862. 
