Castor oil is a vegetable oil obtained by pressing the seeds of the castor oil plant (Ricinus communis). The common name "castor oil", from which the plant gets its name, probably comes from its use as a replacement for castoreum, a perfume base. Castor oil was a common remedy for various ailments in the early 20th century.These bottles reflect the developments in health care during the first half of the 20th century. There is also an aesthetic element, the shapes, colour and textures of the bottles are visually appealing. Two castor oil bottles. Both tall and blue. 246.2 has a label. Both have screw tops and both still have castor oil in them.246.2 front - medallion label - Groves McVitty & Co Pty Ltd castor oil. 246.1 front Burnsides Castor oil. Bottom -J443castor-oil bottle groves-mcvitty burnside medicine glass