The Fourth Sign The sculpture was surveyed in 1994 as part of the Save Outdoor Sculpture! project, but no record of its condition exists. The Fourth Sign The Fourth Sign is a public artwork by the American artist Tony Smith situated on the lawn outside the Art Building at the University of Hawaiʻi at Mānoa, in Honolulu, Hawaii. The large sculpture is fabricated in steel, painted black, and signifies the fourth Zodiac sign, which is Cancer (a crab). The sculpture was commissioned by the Hawaii State Foundation on Culture and the Arts in accordance with the Art in State Buildings Law. Since its
Zodiac late Antiquity, by which time Ptolemy's influence was widely established. Ptolemy clearly explained the theoretical basis of the western zodiac as being a tropical coordinate system, by which the zodiac is aligned to the equinoxes and solstices, rather than the visible constellations that bear the same names as the zodiac signs. The Hindu zodiac uses the sidereal coordinate system, which makes reference to the fixed stars. The Tropical zodiac (of Mesopotamian origin) is divided by the intersections of the ecliptic and equator, which shifts in relation to the backdrop of fixed stars at a rate of 1° every 72 years,