. Contributions from the Botanical Laboratory, vol. 9. Botany; Botany. 36 PENNSYLVANIA ACADEMY OF SCIENCE TABLE 5âComposition of the Ash or Blackjack Oak (Quercus manlandica Muench) Constit- uents K2O NaoO . CaO MgO . MnO . Fe^Oa . AI0O3 p^a SO3 CI SiOo ... o = a Coastal-plain woods Per cent, of ash Per cent, of plant Sum Serpentine-barren Per cent, of ash Per cent, of plant
. Contributions from the Botanical Laboratory, vol. 9. Botany; Botany. 36 PENNSYLVANIA ACADEMY OF SCIENCE TABLE 5âComposition of the Ash or Blackjack Oak (Quercus manlandica Muench) Constit- uents K2O NaoO . CaO MgO . MnO . Fe^Oa . AI0O3 p^a SO3 CI SiOo ... o = a Coastal-plain woods Per cent, of ash Per cent, of plant Sum Serpentine-barren Per cent, of ash Per cent, of plant Change Amount + Per cent. - 37 - 78 - 10 +134 - 73 - 75 - 19 - 14 - 50 - 21 - 19 Locali- ties West of Albion, Camden Co., N. J. Williamson School, Delaware Co., Pa. Notable features: Ratio, basic to acidic oxides, 3:1; potash high, silica low; result of migration into serpentine-barren, decrease m total ash and potash, but considerable increase in magnesia. TABLE 6âComposition of the Ash of Moss Phlox (Phlox sul)ulata L.) Constit- uents K2O .... Na20 . CaO .... MgO . MnO . Fe^Os AI2O3 P2O5 SO3 CI SiOj .. 0 = C1 Coastal-plain woods Per cent, of ash Sum Per cent, of plant Serpentine-barren Change Per cent, of ash Per cent, of plant Amount Per cent + + + + - 35 + 2 - 6 +217 - 50 - 54 - 6 - 24 - 53 - 36 + 83 + 22 Locali- ties Chews Landing, Camden Co., N. J. NE. of Unionville, Chester Co., Pa. Notable features: Eatio, basic to acidic oxides, about 1:1; result of migration into serpentine-barren, marked increase in t
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