A friend sent me the text of the upcoming PW review of Mainspring [ Powell's | Amazon ]. I'll link to the full text when it becomes available, but in the mean time, here's the opening and closing lines.
Lake (Trial of Flowers) envisions the universe as an enormous clockwork, put in motion by God, complete with gears and a mainspring hidden at the Earth's center, in his intriguing first trade hardcover novel, a fantasy set in the magic-tinged late 19th century. ... The author of more than 200 short stories, Lake demonstrates his enormously fertile imagination in this unusual book, marred only by some sluggish pacing. (June)