78 Professor Favre on the Geology of the German Tyrol. 



saccaroidal limestones of the Tyrol are not eruptive lime- 

 stones, because they are placed in the form of bands or beds 

 lying parallel to the central chain.* 



Lastly, a locality where we have seen the saccaroidal lime- 

 stone developed to a great extent, is the pass of Heiligen- 

 Blut-Tauern. 



The pass of Pfitsch- Joch having brought us to the southern 

 acclivity of the Alps, we selected the pass of Heiligen-Blut for 

 our return to the north, as being elevated (8,051 feet), and very 

 near to Gross-Glockner, so that we hoped to find in it as much 

 scientific interest as picturesque beauty. Our expectations 

 were in no degree disappointed. 



The village of Heiligen-Blut is in a charming situation. 

 Its little church, picturesquely placed on a hill, overlooks a 

 valley covered with beautiful trees and cottages. The some- 

 what steep walls of this valley form a frame in which rises 

 the sharp aiguille of the Gross-Glockner, of which the Tyrol- 

 ese and Carinthians never speak without admiration. 



Hacquet was one of the first who wrote about this moun- 

 tain. He estimated its height at 10,000 feet, in his minera- 

 logical and botanical journey from Mont-Terglou in Carnia 

 to Gross-Glockner, published in 1784, a little before Saussure 

 had ascended to the most elevated point of Europe. From 

 that period the environs of Gross-Glockner have not failed to 

 be frequently visited, and they always excite a just admiration. 



On leaving Lienz, in order to reach the pass of Heiligen- 

 Blut by ascending the valley of the Moll in Carinthia, we 

 find crystalline rocks on the northern bank of the Drave. 

 Indeed, while passing Isselberg, we walk over rocks of am- 

 phibole, embellished with garnets, forming masses of greater 

 or smaller size in the mica slates (direction, N. 80, to 85 E.) 

 In the upper part of the valley of the Moll (between Dollach 

 and Putschal) we fall in with frequent associations of sac- 

 caroidal limestone, cipolin, serpentine, serpentineous por- 

 phyries, and green slates. 



In ti-aversing the pass of Heiligen-Blut-Tauern, we fancy 

 that we would walk over crystalline slates or granites ; 



* Foui-net. (Connjtes Rendus of the Academy of Sciences, p. 406; 1844.) 



