104 
Trai^sactions Texas Academy op Science. 
Dumble^ Edwin T. 
timber of East Texas affoTds a charcoal supply, but the making of char- 
coal is too costly. This region is without limestone for flux, which must 
be transported. The 'State experiment in making charcoal. The use of 
brown coal or lignite is advocated. Coking coal from the Brazos Coal 
Field. 
155. Eakins, L. G. 
(Analysis of Gadolinite from Llano County, Texas.) See Hid- 
den, W. E., and Mackintosli, J. B. A Des'cription of Several 
Yttria and Thoria Minerals from Llano (County, Texas. 
Amer. Jour, of Science, III, Vol. XXX'YIII, pp. 474-486. 
December, 1889. 
This analysis was privaitely oommunicated to the authors of the above 
paper by Professor F. W. Clarke, and published by them, together with 
an s.nalys'i'S by Dr. F. A. Genth (see Genth, F. A., in this Record), for 
comparison with their own results. P. 479. 
GADOLINITE, LLANO COUNTY, TEXAS. 
:Sp. gr.==4.239.^b 
Oxygen Ratio. 
‘Si Oo 23.79 79.30 
Th O 2 0.58 0.44 
Mn O trace 
Fe 0 12.42 17.25 
GIO 11.33 45.18 
Ca 0 0.74 1.32 \ 63.751 
Mg O ) i r 121.13 
Ks O ^traces 
Xas O ) 
AI 2 O 3 
Fes O 3 0.96 1.80 
Ces O 3 2.62 2.43 V 56.94 
(Di La )2 O 3 5.22 4.77 f 
(Y, Er)s O 3 41.55 47.94 ' J 
Hs 0 1.03 
Pa O 5 0.05 
Insoluble 
100.29” 
At 17° C. 
t Didymium spectrum very strong. 
t Molecular weight==260. 
§ Erbium spectrum weak.” 
156. Emmons, S. F. 
Orographic Movements in the Rocky Mountains. 
Bulletin Geol. Soc. Amer., Yol. I, pp. 245-286. 1890. 
Reference is made to Texas and Arkansias on pp. 275-276 based upon 
Professor Hill’s paper in A^nerican Journal of Science, III, Vol. XXXVIXI, 
1889, p. 468. 
