A sequence of thirty-five ultraviolet photographic spectra of the Sun has been obtained in the wavelength region 850-2190 Â, as a function of time during the eclipse. These cover the range from before second contact until midtotality, with a spatial resolution of the order 2 arc sec. A general description of the experiment and data is given. Twenty-five new coronal lines have been seen, the majority of which have been identified as new forbidden transitions. The La corona is observed out to over 1.5 Rq, and a quantitative interpretation is presented. Analyses of other features-e.g., prominences, quiet-atmosphere structure, and coronal condensations-are continuing.
SummaryAn improved method for the isolation of highly purified active human Hageman factor has been described. An overall recovery of 25% with a purification of 106 has been achieved. Certain of the physical and chemical characteristics of XII have been elucidated. Selective chemical modification of functional groups and a variety of enzymatic assays have been employed in an effort to shed light on the mechanism of action of this procoagulant.
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