Mr. Bennett on m Geology of Madeira. 397 



with ease. This stratum di -fj^x lava is of a short continuance. 

 Passing a small brook, it dips rapidly to the westward, and in its place, 

 the grey lava is found in a confused though sometimes prismatic form, 

 and rises from the beach while the red lava still runs along the surface 

 to the height of near 100 feet, the top being covered with a thick 

 scoria. 



There is also In the vicinity of Funchal, to the eastward of the 

 town, a fall of water, which, independent of the romantic beauty of 

 the situation, merits being visited on account of the exposure of the 

 two strata of lava in their relative position. The hills are composed 

 wholly of lava, sometimes of a. confused, sometimes of a prismatic 

 formation, the red and grey lavas being visible on both sides of the 

 valley. Near the head of it, a short distance from the cascade, the 

 red stratum is at the bottom, and about 60 feet higher it re-appears,, 

 and again, about ^00 feet higher, alternating with the grey lava.. 

 The upper red lava dips rapidly to the south, and the strata are 

 disposed in the following manner. . 



Lower Red. 



The rock, down which the cascade falls,is also intersected with a red 

 stratum of about 3 feet wide, that traverses it, and dips to the west- 

 ward, and is broken off by a broad dykeof grey lava. It appears about 

 30 feet higher, and dips again to the westward. The substance of the 

 red rock in th.s place is hard, and it breaks into a columnar form, being 



