96 B. N. A. BOUNDARY COMMISSION. 
terraced appearance, on a small scale, each horizontal break producing a 
terrace level. The sandstone contains here and there a few poorly- 
preserved shells, among which can be recognized two species of Melania, 
fragments of Paludina and of Unio. In one place a layer of ironstone, about 
three inches thick, is seen to run for some distance. The most notable 
feature, however, of this part of the section is the remarkable concre- 
tionary character of some layers of the sandstone. The concretions are 
hard, and of all shapes and sizes. They are generally spherical or sphe- 
roidal, and two or more of them are often confluent, forming dumb-bell- 
like masses or more or less continuous sheets of a lumpy character. Many 
are long and root-like, and project in a singular way from the bank. 
231. The lower third of the section in this valley is—as seems often 
to be the case with the lower layers of these rocks, 

much more clearly 
defined, and divided into thinner beds in which dark colours predominate. 
Altogether the section here much resembles that seen in the last great 
valley ; the lower beds of this probably correspond with the purplish 
leaf-beds there, and the great thickness of sands and sandstones above, 
correspond in a general way; though in this place they differ in the 
absence, so far as could be ascertained, of beds of lignite. The layers of 
hardened sandstone must also in this case occupy different horizons in 
the two sections, but this is not to be wondered at, when the extremely 
local, and indeed often nodular character of the induration is considered, 
and the fact that it merely depends upon the introduction of a small 
proportion of calcareous cement among the particles already compacted 
by pressure. | 
232. The whole section in Pyramid Valley may be represented thus : 
FEET. IN. 
1, Hard capping sandstone, (several feet) ...........---+4: 
2. Soft yellowish sandy beds, forming a sloping bank, (about) 50 0 
3. Soft sandstone, grey, false-bedded, (about). ............ 50 0 
4,. Stratified sandy clay: 2.4... s.05.bishiosslagued pees tee 3 0 
5. Purplish plant beds with thin layers of lignite, and much 
selenite in thin sheets, isolated crystals and stellar 
QTOUDE i. 5.05 bd o's se ren whe Cas eee Reg ae en 3 0 
6. Lignite, with many spots of amber......... aietae a atataie 1 6 
7. Purplish bed, with a few plants ............002eeeseeee 2 0 
8. Grey slightly coherent sand, with nodules of arenaceous 
selenite oryutada.. . 65 6.0 ee eRe Ee rug) ® 
9. Purplish bed, with obscure remains of leaves. .........- 1 0 
10. Incoherent arenaceous clay and sand ...........--.+++5: 7 0 
11. Purplish-grey arenaceous clay, with obscure plant remains 
GNG SOMS LOMB WOOT :, 05. png pss babe eens ps See 3 0 
12. Brownish clay with ferruginous layers..............-- Ries ia 
1B. Lagnibe . . css dkny ad <> 4b 00st ned Re ee eee 1 0 
ig. Brown carthy bed oo ois) cvs lawns te he peek eene 0 6 
15. Grey somewhat coherent coarse sand, with argillaceous 
MOAGHEE occ vcce ce vvasesvecvensscoserssashepapau sip 12 0 


