Continental drift plate tectonics theory. In particular, the English geologist Arthur Holmes proposed in 1920 that plate junctions might lie beneath the sea, and in 1928 that convection currents within the mantle might be the driving force. Holmes' views were particularly influential: in his bestselling textbook, "Principles of Physical Geology," he included a chapter on continental drift, proposing that Earth's mantle contained convection cells which dissipated radioactive heat and moved the crust at the surface. Holmes' proposal resolved the phase disequilibrium objection (the underlying fluid was kept from solidifying by radioactive heating from the core). However, scientific communication in the '30 and
The Association for the Study of Play the University of Illinois at Urbana–Champaign (then the University of Illinois) and an affiliate professor in the Department of Anthropology. The scholars who met there formed the "Cultural Anthropology of Play Reprint Society." The next year, Michael Salter organized the first formal meeting of the new organization at the University of Western Ontario during the North American Society for Sport History (NASSH) convention. Participants renamed the organization "The Association for the Anthropological Study of Play" and elected B. Allan Tindall as president. In 1987, the organization changed its name to "The Association for the Study of Play" (TASP). The proceedings