Coccyx

Small conical bone at the lower end of the sa IMG:content-0921.png:[merged small][merged small][merged small][graphic][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][merged small][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][ocr errors][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][ocr errors][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][merged small][subsumed][merged small][ocr errors][merged small][graphic] Cochineal ( Coccus cacti ): a , living on cactus ( Opuntia ); b, male; c, female. America. The active principle is CARMINIC ACID (q.v.). It is used as an indicator in quantitative analysis, and as a dye for silk and wool, giving them a scarlet or crimson color.