The decan and term already recorded for this degree trace to two named ancient writers. Vettius Valens, writing in Greek around the year 175, divided each sign into three ten degree faces under a rotating planetary sequence, leaving Mercury to rule this decan, the second of Cancer, and Ptolemy's Tetrabiblos separately preserves the Egyptian bounds table, keeping this degree under Jupiter's term as well. Neither writer pictured anything, only ruled it. The first complete pictorial set for all 360 degrees survives whole in 1494, in Johannes Angelus's Latin Astrolabium Planum, safely public domain but never freely translated into English.
The next complete English set is Welsh minister John Thomas's, writing as Charubel in 1898, whose entry for this degree describes a man with a very old looking book before him, one that has the appearance of some ancient record, a picture of inherited, unverified authority rather than freshly gathered knowledge. Practically, this degree is mostly used to time events through progressions or to flag two charts sharing it closely enough to matter in synastry. Practically, a degree defined this precisely is mostly used to time events through a progressed Sun, Moon or angle reaching it exactly, or to flag charts sharing the same close point in synastry, both uses considerably younger than either ancient system named above.