— 239 — 
PROXIMATE 
Moisture. . . . . . 4, a Soa 4.55 
Volatile matter . . . , uo 3g 23.95 
Fixed carbon . 2 2 4 « % « Ha 4 6.36 
ASM. te ae UL og ee 3 65.14 
100.00 
PUIOMUT se: <a .g. d- Gide Ae OR 2k ¢ 5.44 
PHOSpHOTUG 5 4 ww « © & © 0.05 
ULTIMATE 
CoP DOH. 6! wg es ee ae 21.41 
PIVOORE: ca ke! Gy. Ge ae A A A 2.89 
OXYSeNs 4 Soe eb wR ew ee. 6.64 
INUCORO Se ue ae EO 0.52 
SUIPOME o.@ a! Sy we a & & we 3,40 
ASI SS ous 4, Soa. ee ee x 4 65,14 
100.00 
Petrolene . . . . . hh, 6.96 
Asphaltine. . . . . 0.44 
Non-bituminous organic matter. . . . 27.46 
ASH: cogs, ee. CAS OME ct: Se Abs chy GR ch 65.14 
100.00 
B. T. U. calculated. . 2. . wl, 4612 
B. T. U. calorimeter . . ... . 4262 
In the manufacture of illuminating gas, better results appear 
to be obtained when the shale is mixed with a good grade of 
gas coal. 
The oil works formerly engaged in the distillation of these 
shales at Taubté are not now in operation. 
According to the theory of Dr. David White, these shales pro- 
bably owe their bituminous matter to the growth of algae in the 
lake-like body of water which once existed along the valley of the 
Parahyba, caused probably either by differential elevation in the 
lower end of the present filled valley, or by some eruptive flow 
of igneous rocks which obstructed its old and deeply eroded 
channel. 
