VALUE OF LIGNITES AND IRONSTONES. 171 

403. Souris Valley. (§ 215.) 7 foot seam. Hard, compact, black 
lignite, breaking with pseudo-conchoidal fracture, and showing traces of 
structure of wood. Ash yellowish-white, light. 
By rapid coking. 
1 




OO Oe RS SE ee ae ee 15.11 
OO eed Da 0 ae 47.57 41.67 
Volatile combustible matter.................... 32.76 
eee 0 ea, elt << wic\e wisn viva & pw nce 4.56 
oe 100.00 
a 404. Souris River, 62 m. W. of Wood End. (§ 221.) Laminated, and 
é breaking up along horizontal planes on drying. Many small drops of 
: amber or fossil resin. The wood composing the bed has apparently been 
F much decomposed. Ash reddish. 
MN ancl le oe cee tN GRU Niall wig Bae ree Pe a oS sine! Sn llel dated 8 13.85 
RET RETR Ae SRR ss Dias gl Ai cig la aig’ s)cioin ahd aieha'e moraine Sears x ates @ 47.90 
Wolatile combustible matter... 3...02-....30s ccs c ese ee ese 30.95 . 
PRR A aes Ah Mh en AA Sls Ae eee sa 'play'sle > laid vinta HBG 7.30 
100.00 ' 
405. Great Valley. (§ 225.) Lowest Lignite. Weathered specimen, 
erumbling. Ash grey. 
By rapid coking. 
0 UD eee bt ee ade a ane en 18.74 
Cs NE aS ee BE nt oe ee 35.69 30.04 
Volatile combustible matter.................... 40.54 
ONO Ss oa ee asl Siateh ae occ ih SS. Nal GaSe) nln hijo ahdinle 0s 5.03 
: 100.00 
406. Great Valley. (§ 225.) Middle Lignite. Weathered specimen. 
Soft, breaking into layers along deposition surfaces. Largely composed 
of comminuted charcoal-like fragments. 
By rapid coking. 
ES AR et Ee OR ne PRE 16.28 
Memes. FI oS ee a . . 46.25 29,18 
Volatile combustible matter..................4. 33.19 
, SS Deve tee L is aia ihn fla Oe Seon, oe «kale 4, 28 
: . 100.00 
407. Great Valley. (§ 225.) Upper Lignite. Outcrop specimen. 
Crumbling. Tends to break into layers parallel to deposition planes. 
B id coking. 
‘ eit SE Be ea BOR TERE SS DAS Teneo s Wiehe 
aS ERO CARINE 5 2553 S34 Toy Js Shae deca Wrae. ws: 34.45 27.61 
d Volatile combustible matter........... ........ 44,43 
FE et ear ipae toe ip panes Laemooes eee Fy ee 5.92 
4 100.00 
> 408. Great Valley. Section on the forty-ninth parallel. Bed four 
% feet thick. Out-crop specimen. Brownish. Fracture almost conchoidal. 
Ash yellowish-white. 

