T. S. Hunt on Alpine Geology. 3 
crystalline rocks of the Alps are various talcose and chloritic — 
quartzose, and holding garnet, staurolite and cyanite, are also 
met with among the crystalline rocks of the Alps. A great 
belt of serpentine and chloritic schists, traced for a long distance, 
schists of the Alps have close resemblances with those of the 
Urals, and as Damour has shown, contain a great many mineral 
species in common with them. Favre has moreover re- 
marked the strong likeness between the chloritie and talcose 
schists and the mica-schists with-staurolite of the western Alps 
and those found in Great Britain. 
Granite, though not abundant in the vicinity of Mont Blanc, 
occurs in several localities, the best known of which is Valorsine, 
where a porphyroid granite with black mica forms considera le 
masses, and sends large veins into the adjacent gneiss. These, 
with others found at the Col de Balme and in the Aiguilles 
Rouges, appear to be true eruptive granites. Numerous small 
