Someone from the department just emailed me this. Bowen was a really important geologist, for some context. (link to more in depth explanation of why Bowen was important)
This is so beautiful.
these guys were pals, so this is all kidding around or whatever, but it’s still beautiful
Excerpt from the link above: “Some readers may also recall the delightful discussion on the origin of granites in which Bowen described the metasomatizers as the “soaks” who had to have their liquor in lavish quantities whereas the pontiffs, the magmatists, handled their liquor like gentlemen, taking it or leaving it as the occasion indicates.”