122 THE ROYAL SOCIETY OF CANADA 
thirty distinct layers may be distinguished in a breadth of eight inches. 
(See Plate I.) Of these the broadest band, a white one, is just one inch 
wide and consists of snowy alabaster, quite compact, and though 
following the larger curvatures exhibiting within itself no plications of any 
kind and having flat well defined borders. Upon either side of this, but 
separated by flat layers of a grey colour, less than one eighth of an inch 
in width, with which the white seems to graduate, are other layers strictly 
parallel with the first in general attitude and like the first following the 
larger foldings, but having within themselves crumplings which bear 
no relation to the latter, except that they are nearly at right angles to 
them. In one of these layers, nearly an inch in width, the appearance 
is that of a series of large papillae, each half an inch in height and 
confluent at the base, the spaces between the tufts both above and 
below being occupied by the same grey rock which bounds the whole. 
Of these tufts or papillae, which, however, are only such in cross section, 
being in reality a series of small folds, about sixteen are found in a space of 
five inches, each elevation being about one quarter of an inch wide, with 
the white layer somewhat less than one-eighth. Above this layer upon 
the same side, but separated from it by grey bands without foldings, is 
another which in section presents the appearance of a twisted rope, 
while beyond this are still other layers presenting similar structures but 
of less regularity. In another specimen (Plate II.) one of the white 
layers, a quarter of an inch wide, though uniform as a whole and as before 
strictly parallel to the planes of bedding, has its entire upper surface 
raised to what in section appear like papilla-like projections, hardly 
more than one-sixteenth of an inch in height, but with these confined 
to one surface, the mass of the layer being quite homogeneous, while 
the other surface is flat. The appearance indeed in this case is that of 
serration rather than plication, the dentalations, resembling those of a 
fret saw, being conical and somewhat pointed, while they are sharply 
separated from each other by cleft-like depressions, without any evidence 
of confluence. Almost touching this serrated layer throughout its 
length is a still finer one showing the rope-like appearance. Modifica- 
tions of the above structures also occur, the plications being sometimes 
more open and sometimes obliquely inclined and drawn out, as though 
they had been subjected to a lateral thrust subsequent to that produc- 
ing the folds themselves. In places the structure is quite complicated, 
but usually quite regular for a distance of several feet. In one instance 
the compact white layer is disjointed and faulted several times in the 
space of an inch, the lines of dislocation being occupied by grey rock, 
but without any sign of such faulting in the enclosing layers, while in 
still another instance both are faulted. Finally, in one case there is a 
conspicuous occurrence of unconformability, one set of layers resting 
