"You have the two choices,” Jamf cried, his last lecture of the year : outside were the flowery strokings of wind, girls in pale-colored dresses, oceans of beer, male choruses intensely, movingly lifted as they sang Semper sit in flores/ Semper sit in flo-ho-res . . . “stay behind with carbon and hydrogen, take your lunchbucket in to the works every morning with the faceless droves who can’t wait to get in out of the sunlight—or move beyond. Silicon, boron, phosphorus—these can replace (...)