. Map modeling in geography : including the use of sand, clay putty, paper pulp, plaster of Paris, and other materials : also chalk modeling in its adaptation to purposes of illustration. Fig. 22.—Anthracite Coal. Alice Wilson, 10 yrs. 3. Anthracite coal is found in eastern Pennsylvania and inRhode Island. 4. It is much harder than bituminous coal. 5. Sulphur is often found in bituminous coal, and causes theyellow streaks in some Fig. 23.—Bituminous Coal. Clare Leighner, 9 yrs. 6. Cannel coal (Fig. 24), burns with a very steady flame, and,indeed, was first called candle coal from this c

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. Map modeling in geography : including the use of sand, clay putty, paper pulp, plaster of Paris, and other materials : also chalk modeling in its adaptation to purposes of illustration. Fig. 22.—Anthracite Coal. Alice Wilson, 10 yrs. 3. Anthracite coal is found in eastern Pennsylvania and inRhode Island. 4. It is much harder than bituminous coal. 5. Sulphur is often found in bituminous coal, and causes theyellow streaks in some Fig. 23.—Bituminous Coal. Clare Leighner, 9 yrs. 6. Cannel coal (Fig. 24), burns with a very steady flame, and,indeed, was first called candle coal from this cause. 7. Some coal contains much shale and slate. 8. Coke is made by burning good bituminous coal in ovens. 52 Nature Study, 9. It is a most valuable fuel for use in furnaces for the makingof fine grades of iron and steel.

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Keywords: ., bookcentury1800, bookdecade1890, bookidmapmodelingi, bookyear1894