nnn nnn nnn nnn nn nnn nn ne en eee ee aaa ria. 
g oe ae : 
ee eset ene oe ee eee ee ee ee 
booger a sa ee a ld eel 
of Albertite and allied minerals. 369 
shaped, thinning out from two and a half feet in thickness 
at the bottom to six inches at the top. 
The bluff is composed of semi-indurated Post-pliocene sand- 
stone. The strata are so slightly curved as to appear horizon- 
tal for short distances. A recent deposit a few feet in th ickness 
forms the soil of the plain above. These sandstones rest un- 
duct into the sea at the time when this beach was at the sea 
level. The maltha now, as then, becomes dense upon exposure, 
and is cast upon the beach, where it is rolled and mixed with 
the sand and gravel until it becomes hard asphaltic sand. 
It is evident that this maltha at one time arose and saturated 
While the matter in which the mass of bitumen collected 
has not necessarily any direct bearing upon the question of its 
subsequent injection, the subject is still of much interest. 
