John Marshall Harlan's Political Memoir

Near the end of his life, John Marshall Harlan wrote a number of biographical essays, presumably at the request of his children. Most of the essays relate to his experiences in the Civil War. The essay reprinted here instead recounts Harlan's political career before he joined the Supreme Court. Although he rarely won any elections and only held a couple of offices, Harlan's political odyssey is significant in that it shows how his social views were formed. Harlan's transformation from a staunch anti‐abolitionist to a civil‐rights advocate can be viewed as a series of reactions against various opponents as he struggled to find his political identity after the collapse of the Whig party in the 1850s.     

The Civil War Reminiscences of John Marshall Harlan

Towards the end of his life, John Marshall Harlan wrote a series of essays about various events of his life. Collected together, the documents form the closest thing to an autobiography Harlan was to write. Most of the documents concern Harlan's experiences in the Civil War, and some of them repeat the same stories. Cited often in biographies and articles about Harlan, they have never been published before. The three printed here were chosen not only for their individual interest, but also because, taken together, they form a nearly complete account of Harlan's wartime experiences.     

RADIOCARBON MEASUREMENTS ON A FLOATING TREE-RING CHRONOLOGY FROM NORTH-EAST SCOTLAND

Radiocarbon measurements have been performed on a 250 year ‘floating’ tree-ring section recovered from an archaeological site in north-east Scotland. Short term fluctuations in atmospheric concentration appear to be superimposed on a general trend of decreasing ambient ¹⁴Cparallel with tree growth. The most significant finding is the range of dates obtained from the sequence, namely 400 years, since it implies that the error on a single radiocarbon date is considerably greater than at present accepted on the basis of analytical precision alone.     

Caesium-137 as an indicator of geomorphic processes in a drainage basin system

Caesium-137 from fallout from nuclear weapons tests is adsorbed on fine sediments and becomes an effective tracer. It is hypothesised that within a drainage basin, sites undergoing little or no erosion accumulate ¹³⁷ Cs in their upper layers; cultivated soils will have ¹³⁷ Cs uniformly distributed within the cultivated layer; eroded soils, cultivated or not, will have relatively less ^l37 Cs, depending on the severity of erosion. Accumulated sediments will have characteristic ¹³⁷ Cs profiles reflecting temporal fallout variations and sedimentation history. This hypothetical model is largely confirmed by results from Maluna Creek basin, where erosion and accumulation of sediments has taken place. Soils under viticulture have about one third the ¹³⁷ Cs content of soils with grass cover, indicating more severe erosion under cultivation. Caesium-137 profiles in alluvial fan and flood plain deposits correlate with sediment layers and known cultivation history.