62 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
to have been found in place; but the tree trunks cannot be far out of 
position, and the general character of the section points to the sub- 
aerial accumulation of certain of the sandstones in the manner of 
outwash plains such as now accumulate in front of glaciers or in 
similar situations permitting the growth and fall of trees between 
times of aggradation by débris-laden streams. Only a detailed survey 
of the region would suffice to determine more definitely the relations 
to sea-level and the existence of lenses of tillite in the section. 
Tillite Beds on the Rio Jaguaricatu in Paranda. Sengéns is a station 
on the newly constructed line of railway from Itararé to Jaguariahyva 
in northeastern Parand, on the south bank of the Rio Jaguaricatu. 
In the railway cuts which were fresh in 1908 good sections of the 
glacial boulder-clays or tillite were exposed for several kilometers in 
either direction. The Station is near the 228 kilometer post. The 
following notes pertain to the exposures along the curving course of 
the railroad which follows down the right bank of the river towards 
Sao Pedro de Itararé. Near post 234 a well-striated sandstone pebble 
was found dislodged from a sandy conglomerate or tillite at this 
locality. This pebble is shown in Plate 21 to the left of the 
hammers. The striated surface is well flattened and the edges 
battered off. It displays no zigzag striae and may be a fragment of 
the old glaciated floor. Somewhat farther to the northeast between 
posts 234 and 235 the boulder-clay type of tillite is well shown, as in 
Plate 21, there containing small boulders of granite. 
Between posts 235 and 236 apparently near the top of the local 
bed the view shown in Plate 22 was taken. At this point in a 
fresh railway cut there is exposed an angular slab-like block of a fine 
grained white sandstone resembling novaculite, nine feet (three 
meters) long and about twenty-one inches thick, the third dimension 
not being ascertainable, the largest angular block I myself saw in any 
section in Brazil. This rock is practically identical, lithologically, 
with a white sandstone layer which occurs lower in the section at a 
locality along the railway where a fault brings the beds towards the 
surface. (Fig. 13). . 
This fault extends in a northwest direction and the downthrow 
appears to be towards the west. The sandstone in question is here 
overlaid by pebble beds. Between these eastern exposures and 
Sengéns there are coarse sandstones containing at least one pebble 
bed with a greater proportion of granitic pebbles than are found in the 
more typical tillite of the district. From this pebble bed I collected 
three stones carrying faint striae. 
