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HAYDEN LORIMER 《Geographical review》2013,103(2):177-189
A long‐form essay, arranged in a sequence of eight segments, in which I travel the countryside in search of a missing person: the scarecrow. Different aspects of the centuries‐old practice of scarecrow making and bird scaring are described. Traditionally constructed as a likeness of the human form and erected in newly sown fields as a visual method for warding off feeding birds, the existence of this striking farmland contraption is variously reported: as having all but vanished and yet of making unexpected reappearances; as materially functional and complexly meaningful; as a figure summoned up by cultural memory and personal recollection; and as a focus for mixed feelings of loss, nostalgia, estrangement, and community. A version of “geographical portraiture” accumulates, in which a single, scenic landmark stands as the essay's central fascination and simultaneously operates as a cipher for stories old and new, of agricultural society, country life, landscape politics, and rural values. 相似文献
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Ion-thinned samples of an iron-rich augite in an inninmoritepitchstone from Ardnamurchan, Scotland, have been examined bytransmission electron microscopy at 100 and 1000 kV. Eutecticcrystallization of augite and pigeonite occurred and subsequentlysemi-coherent irregularly-shaped regions and coherent (001)lamellae of pigeonite were exsolved in the augite. Nucleationoccurred heterogeneously at grain boundaries and subsequentgrowth of the lamellae proceeded by the migration of ledgesalong the (001) interface. The analytical electron microscope EMMA-4 has been used to analysethe exsolved pigeonite lamellae. Their composition was foundto be similar to that of the co-existing primary pigeonite. It is concluded that the augite cooled through the solvus slowlyenough for heterogeneous nucleation and growth to occur whereaspyroxenes which cool rapidly unmix by the mechanism of spinodaldecomposition. 相似文献
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