and insecticidal activities against the adult of Haemaphysalis bispinosa (Acarina: Ixodidae) and hematophagous fly Hippobosca maculata (Diptera: Hippoboscidae). Members of the Bodo tribe of Bodoland in Assam, India, use the leaves of the plant to feed the larvae of muga and endi silkworms. Castor oil is an effective motor lubricant and has been used in internal combustion engines, including those of World War I airplanes, some racing cars and some model airplanes. It has historically been popular for lubricating two-stroke engines due to high resistance to heat compared to petroleum-based oils. It does not mix well with petroleum products, particularly at low temperatures, but mixes better with the methanol-based fuels used in glow model engines. In total-loss-lubrication applications, it tends to leave carbon deposits and varnish within the engine. It has been largely replaced by synthetic oils that are more stable and less toxic. Jewellery can be made of castor beans, particularly necklaces and bracelets. Ricinus communis leaves are used in botanical printing (also known as ecoprinting) in Asia. When bundled with cotton or silk fabric and steamed, the leaves can produce a green-colored imprint. See also Kikayon Toxalbumin References Further reading External links A Bean Called Castor Can Cut Carbon & Fuel the Future Ricinus communis L. – at Purdue University Castor beans – at Purdue University Ricinus communis (castor bean) at Cornell University Ricinus communis in Wildflowers of Israel Castor oil plant Flowers in Israel Crops originating from Africa Acalypheae Monotypic Euphorbiaceae genera Taxa named by Carl Linnaeus Poisonous plants