1892.J 
393 
[Foerste. 
8. Consideration of these theories. 
a. Faults. 
b. Special account of various cirques. 
c. Fractures. 
d. Lowest points of outlets for lakes. 
e. Glacial streams. 
/. Backward erosion. 
9. Consideration of additional theories. 
10. Antecedent origin of the transverse streams of the Jura. 
11. The drainage immediately antecedent to the folding. 
12. The effects of folding on the general antecedent drainage. 
13. Division of the Jura drainage by recent warping. 
14. Streams consequent 011 the folding. 
15. Sub-consequent drainage. 
16. Combes. 
17. Capturing of streams. 
18. Summary. 
Supplementary Note on the Drainage of the Pennsylvania Appala- 
chians, by W. M. Davis. 
Plates. 
X. Diagram of the Bernese Jura, showing the restored anti- 
clines, with the chief streams and cirques. (See section 86.) 
XI. Profiles of existing anticlinal crests, with notches at cirques 
and levels of adjacent divides. (See section 8d.) 
LITERATURE. 
J. Thurmann. Essai sur les Soulevemens Jurassiques. 1836, pp. 15, 33, 
48. 
A. Gressly. Sur le Jura Soleurois. Mem. soc. hist. nat. Neuchatel, 
1840, pp. 180, 192, 194. 
B. Studer. Geologie der Schweiz. Yol. 1, 1851, p. 150-153. 
E. Desor. Ueber die Deutung der Schweizer Seen. 1861, pp. 7, 8, 
16, 20. 
A. Jaccard. Description Geologique du Jura Vaudois et Neuchatelois, 
1869, pp. 256, 258, 268, 277. 
L. Riitimeyer. Ueber Thai- und See-Bildung. 1869, pp. 36, 41, 42, 72. 
J. B. Greppin. Description Geologique du Jura Bernois. 1870. 
(A. Helland. Om Botner og Saekkedale samt deres Betydning for 
Theorier am Dalenes Dannelse. Geol. For. Forh. Stockholm, 
1875.) 
A. Heim. Untersucliungen liber den Mechanismus der Gebirgsbildung. 
1878, I, pp. 272, 278, 280, 293, 313, 314; II, pp. 79, 320. 
O. Peschel. Physische Erdkunde. 1880, II, p. 443. 
M. Bertrand. Excursion entre Morez et Saint.e-Claude. Bull. soc. 
g6ol. France. Ser. 3, Vol. XIII, 1885, p. 789. 
A. Philippson. Studien liber Wasserscheiden. 1886, pp. 148, 152. 
