|S 
- ety 

98 B. N. A. BOUNDARY COMMISSION. 
can be traced. The lignite and associated beds undulate slightly in all 
the sections, the former decreasing from four feet in thickness in the 
most northern bank, to one foot in that furthest south. The overlying 
rocks consist of yellowish and grey sands and clays, well stratified, and 
much resembling those forming the upper part of the section in the Great 
Valley. (Plate IV., Fig. 3.) 
236. The best exhibition of these strata was obtained in a bank about 
forty feet in height, on removing the decomposed material from the sur- 
face. The section was carefully measured as follows :— 
REET, IN 
1. Soil. 
2. Quartzite drift, several feet. 
3. Soft greenish sandy clay, 2 feet or more. 
4, Soft blackish :¢elay (i. 150, ds > wep ce Saale els wwe beets 1 6 
5&.° Rusty crumbling taudy: clay. ':, ... 2005 eweacamenen teen ee 
6. Grey clay, with some plant remains.................+4. 9 0 
7. Grey clay, with well preserved dicotyledonous leaves.... 1 8 
8. Impure ironstone in concretions ................08-e00s 0 3 
9. Yellowish sand and sandy clay, with obscure plant 
WORHAIIG ook 5. sae dave itae Was et aie tienen ees See 0 
10. Greyish and yellowish fine sandy clay......,.........:- ae 
11. Scattered layer of small ironstone balls ................ 
2. ‘Grey 'fime samily Glay 2.35 2h Lie. Lae Me 1 0 
13. Rusty layer, with crumbling plants................060- 0 3 
14, Grey saad 4.43. a16- ieee) ben obp bieeeke Ue eaeieeeen 4 
15. Detached masses of lignite showing the form of flattened 
tree trunks; BDGU «\, << occ whichewe <b olitewk adoden cys 4 
16. Yellowish-grey ‘fime Hand 22... si. DACA sis ile bide (hire wb 0 6 
17. Grey clay, with plant remaius............00. s«ass> <i 
18. Lignite, not of best quality. The grain and form of com- 
ponent wood generally clearly perceptible. Bed undu- 
lating slightly. 3 to 4 feet. 
19. Soft grey arenaceous clay, 1 to 2 feet. 
ADORD. $ Vsvie.0 A OP Phy tee Ey tn ee fey 9 31 0 
237. The vegetable remains imbedded in the rocks overlying the 
lignite, are mostly those of deciduous trees, and in certain beds are very 
perfectly preserved. ignite from this section was used for camp fires, 
in the absence of wood, but did not burn very freely, as it was taken 
damp from the bed, and piled on the ground without any provision for 
draught from below. 
238. The most interesting and important section, however, in this 
region, is that which occurs in a valley joining that of Porcupine Creek 
from the west, exhibiting a bed of lignite eighteen feet in thickness, 
and yielding ‘also some of the most perfect and interesting remains of 
plants. The bank in which this out-crop is situated is over half-a-mile 
outh of the Line. The beds are avanged thus :—(Plate V.) 

