Proceedings of the Royal Society . 
83 
“ A. Black calcareous rocks of the Buet, with belemnites, a good deal con- 
torted (the same rock as at Cote des Pigets). 
“ I. Imperfect cargneule (porous limestone), about 2 feet thick. 
“ C. Common cargneule, used for limeworks, &c. (about 50 feet thick at the 
utmost). 
“ R. Debris concealing junction with gneiss. 
“ G. Gneiss laid bare, striking N. 50 E., and dipping 36° S.E., an unusually 
small angle, quite accidental and local, the average dip south being 
much steeper. 
“ 2. On the road to Chapeau, the same succession of beds takes 
place, the dip being greater (about 50°); the Buet limestones lower 
down dipping still more (about 65°). I say £ about,’ not as guessing 
the angle, but giving the average of many accurate measurements. 
<{ 3. Junction opposite Prieure of Chamouni, at my excavation. 
!t L. Brown limestone, a form of the cargneule. 
“ C. Cargneule, generally enclosing fragments of the browner limestone, and 
with bands of greasy green earth, E, E, in the middle of its beds. 
“ F. Fault filled with fragments of clay and cargneule. 
“ D. Decomposing white gneiss. 
“ G. Hard gray gneiss of Montanvert 
