W. S. Symonds, Mammalia in interglacial deposits (1885)
“ May I be permitted to ask aid from some American contributor to Science who follows the lore of glacial geology? I learn that some American glacialists are satisfied that there have been two periods of glaciation, and I would inquire whether the interglacial deposits contain, like those of Switzerland, remains of mammalia, and if so, what they are. ”
