No. 
Sioux City Academy of Science and Letters. 173 
Iil. 
aPROXIMATE ANALYSES OF LIGNITES FROM OTHER 
LOCALITIES—AIR-DRIED BASIS. 
PERCENTAGES 
SAMPLE AND LOCALITY Volatile} pecoa | 
Moisture peeDeS ran Ash (|Sulph’r 
Mat.er Carbon 
Aa From North Dakota (near 
Missouri River)............. ....--.- 5.58 | 39.43 | 52.70 1.48 80 
Rock Springs, Wyoming............ 6.77 | 38.41 | 53.21 1.06 59 
Roek Springs, Wyoming............ 5.64 | 40.89 | 52.01 94 52 
Rock Springs, Wyoming............ 6.05 | 41.25 | 51.05 1.07 55 
Cannel coal, Kentucky.............. 0.47 | 50.53 | 33.07 | 15.93 
a. Analyses by the writer. 
IV. 
COMPARATIVE PROXIMATE ANALYSES OF LIGNITES AND 
COALS FROM VARIOUS SOURCES. 
No. 
10 
ati 
PERCENTAGES 
CHARACTER AND LOCALITY : ole Bei 
ture | tible |Carbon| 4s |Sulph’r 
‘| Matter | 
Lignite, air dried, Ouachita 
Coumibiyys) Auky eave) eee Nee 11.23) 44.04 | 33.69) 11.04) 0.70 
Lignite, air dried, Ouachita 
County, ATK Ao eee 9.81) 46.29 | 29.43] 14.47) 0.63 
Lignite, freshly mined, Bowie 
county wLexas) an eee 11.55] 37.70 | 42.30] 7.55} 0.90 
Lignite, freshly mined, Robert- 
son county, Texas.................... 16.40) 41.52 | 33.42} 7.70) 0.96 
Lignite, air dried, Robertson 
county, Texas. 2.2.2... 2ccccce:cececcsenees 8.70) 39.16 | 40.16) 10.45) 1.38 
Lignite, air dried, Medina 
county,) Lexas: eae 13.25) 40.62 | 36.47; 8.40) 1.26 
Coal, air dried, Wapello county, 
TO Wis Ue Nn sb Eval 9.98] 41.46 | 42.21) 6.35) 2.53 
Coal, air dried, Davis county, 
Toya ee Reo eae NE eee 5.24! 37.00 | 50.66} 7.10) 2.25 
Coal drillings, Greene county, 
TO Wye ee NE PS OL UES 5.94) 35.20 | 41.20) 17.66) 2.438 
Coals, average of 16 samples 
from Iowa....... a a Nah See SO aa 8.08} 38.14 | 45.60) 8.18) 3.42 
Coals, average of 22 samples 
from [limos es 10.00} 31.60 | 46.72) 11.49} 3.09 
