MODE VIII. ARGILLACEOUS GLUTENITE. 285 



veined granite and common mica slate. Their 

 beds run from north to south, as does the valley 

 of Valorsine, and form an angle of 60 degrees 

 with the horizon, leaning to the west, against the 

 valley. These rocks are continued in the same 

 situation for more than half an hour's walk ; they 

 are lost sight of under the verdure which covers a 

 small plain, situated in the midst of woods, and 

 which is called le plan des Ceblancs. 



" From thence, ascending obliquely on the south 

 side, great blocks of grey schistus, or of a violet 

 red, are found, sometimes even of a decided violet 

 colour, which contain a great quantity of foreign 

 pebbles, some angular, others rounded, and of 

 different sizes, from a grain of sand to the size of 

 the head. I was desirous of seeing these pud- 

 ding-stones in their native place. I went straight 

 up, to get to it ; but there, how was I surprised 

 to find their beds vertical ! 



" This surprise will easily be conceived, when 

 it is considered that it is impossible that these 

 pudding-stones could have been formed in this 

 position. 



" That particles of the greatest tenuity, sus- 

 pended in a liquid, may be agglutinated among 

 themselves, arid form vertical beds, is what we 

 easily conceive, and of which we have proof in 

 the instances of alabaster, agates, and even in 



