PROLOGUE
AT ROME
ONE summer evening in the year 1848, three Cardinals and a missionary Bishop from America were dining together in the gardens of a villa in the Sabine hills, overlooking Rome. The villa was famous for the fine view from its terrace. The hidden garden in which the four men sat at table lay some twenty feet below the south end of this terrace, and was a mere shelf of rock, overhanging a steep declivity planted with vineyards. A flight of stone steps connected it with the promenade above. The table stood in a sanded square, among potted orange and oleander trees, shaded by spreading ilex oaks that grew out of the rocks overhead. Beyond the balustrade was the drop into the air, and far below the landscape stretched soft and undulating; there was nothing to arrest the eye until it reached Rome itself.
It was early when the Spanish Cardinal and his guests sat down to dinner. The sun was still good for
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