Thirty-six Observation Lessons on Common Minerals |
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agate ALPHEUS HYATT ammonia-water binary granite biotite blackboard Boston bottle boxes calcite called carbonate of lime carbonic acid carbonic acid gas cents chalk clay coal coin color common minerals compact copper corrected crystals cuff-buttons D. C. HEATH DESCRIPTION DISTRIBUTE specimens ductile easily effervescence erals examination feldspar Franklin Park glass tube Glass will scratch gneiss gold graphite gypsum heat hematite hornblende hornblendic syenite Hyatt's hydrochloric acid illustrate inches iron isinglass labelled limonite look lustre magnetic Magnetite malleable marble metallic mica milky quartz nitric acid Note-book opaque paper pebbles pencils phlogopite places plants plaster of Paris plate powder pudding pyrite quartz and feldspar Roxbury pudding-stone sand satin-spar scale of hardness scaly scratch glass Siberia silver small piece smoky quartz specimen will scratch stone structure sulphur syenite teacher tell the pupils test-tube thimbleful things transparent window glass wire words yellow