We are here to acknowledge Wes Hildreth's researches on silicic magmatism. His celebrated account of the Bishop Tuff, now eponymous, is the most extensively analyzed and influential rock mass since the Skaergaard intrusion and, for its detail and significance, has become the yardstick of silicic petrology; yet his study is less than 7 years old.

Edward Wesley Hildreth III was born in 1938, and as the English would say, attended Harvard College in 1956. In 1961, he graduated cum laude with a major in geology, a minor in government, and a travelling scholarship to see the world. For the next 10 years he did so and became a naturalist in the U.S. National Park Service, with periods in Death Valley and in the Olympics. His “Death Valley Days” were to return, forthrough his love of the Panamint Ranges he met Mitch Reynolds, then an assistant professor at [the University of California] Berkeley, and in 1971 he arrived in Berkeley as a new graduate student, anxious and impatient to unravel the structure of the Panamints.