Oak apple due to the superficial resemblance and the preponderance of the oak marble gall in the wild. Other galls found on oak trees include the oak artichoke gall and the acorn cup gall, but each of these has its own distinctive form. Some common oak-apple-forming species are the "Biorhiza pallida" gall wasp in Europe, "Amphibolips confluenta" in eastern North America, and "Atrusca bella" in western North America. Oak apples may be brownish, yellowish, greenish, pinkish, or reddish. Oak galls have been used in the production of ink since at least the time of the Roman Empire. From the Middle Ages to
Royal Oak Intermediate Between the years of 1912 and 1922, the area now occupied by the school was the site of the "Boyd Zoo", a major local attraction at the time. Prior to the building being finally commissioned as a school, it was used initially as a temporary hospital during World War II. The school celebrated its Golden Jubilee in 1993. It will celebrate its 75th anniversary on 1 April 2018. Royal Oak Intermediate has 4 houses; Binsted, Grainger, Jordan and Buchannan. They were named after the 4 founders of the school. Henri Binsted (Principal on 1 April 1943 - 1947), Cecil Grainger,