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
Canadian Society for the Study of Rhetoric Canadian Society for the Study of Rhetoric The Canadian Society for the Study of Rhetoric (CSSR) is a bilingual scholarly society based in Canada that is open to scholars involved in the teaching or researching of rhetoric. While the CSSR was founded as a Canadian version of the International Society for the History of Rhetoric, and while—as implied by its original name, the Canadian Seminar on the History of Rhetoric (CSHR)—it originally focused on the history of rhetoric, the CSSR now focuses on a range of rhetorical scholarship. Its membership typically includes scholars from North America and Europe (not just