I 



PIGMENTS 1099 PIGMENTS 



CONSPECTUS OF PIGMENTS.— Continued. 



Name. 



Composition, Preparation, Etc. 



Color. 



Pbyllocyanin (Cyanophyl). 



Phylloxanthin (Xanthophyl). 



Phymatorhusin. 

 Phyterythrin. 

 Pink madder. 



The acid constituent of chlorophyl. Cf. Phylloxan- ■ Blue or greenish-blue. 

 thin. 



One of the constituents of ChlorophyL Cf. Phyllo- : Yellow. 

 cyanin. 



From metastatic deposits in the skin. 



Same as ErythrophyL 



Red. 



Lake from madder-root. 



I 



Quercitrin. 





Quinora-red. 



hodophyl. 



Rhodospermin. 



Rose-lake. 



Rose-madder. 



Rottlera-red. 



Ruben's madder. 



Ruberythrinic acid. 



Rubiacinic acid. 



Rubiadin. 



.ubiadipin. 



iubiafin. 



Rubiagin. 



Rubian. 



Rubianic acid. 



Rubianin. 



Rubidehydran and Rubihydran. 



Discovered by Chevreul and Brandt. It occurs in the 

 bark of the black-oak (Quercus tinctoria, Mich.), as 

 well as other species of oak, also in tea-leaves, and 

 as queraescitrin in the leaves, flowers, and cotyle- 

 dons of the horsechestnut. 



Obtained from cinchona bark by Pelletier and Caven- 

 ton (1820). 



The compound pigment of the red Algce. Cf. Phyco- 

 erythrin and FloridecB-green. 



The red coloring-matter of the Floridece, obtained by 

 Rosanoff, Cramer, Askenasy, Sorby, and others. 

 Cf. Phycoerythrin. 



Sulphur-yellow to chrome- 

 yellow. 



Red. 



Carmin - red in transmit- 

 ted light, green or red- 

 dish-yellow in reflected 

 light. 



Red. 



From logwood. 



Lake from madder-root. 



Obtained from the dust-like hairs of the capsules of 

 Rottlera tinctoria, Pixby, and used in India as a 

 dye for silk. 



Lake from madder-root. 



Deep brown-red. 



Rose. 



Red, orange, or, by special 

 process, scarlet. 



Brown. 



An acid glucosid, isolated by Rochleder, in 1851, from 

 the madder Rubia tinctoria, L., of which it appears j 

 to be the primary chromogen. 



Brick-red, cherry-red. 



Obtained from Rubiafin by Schunck. 



Citron-yellow. 



Obtained by Schunck from madder-root. 



Golden-yellow. 



Obtained from madder-root by Schunck. 



Yellowish-brown ; it yields 

 a blood-red color with 

 alkalies. 



Obtained from madder-root by Schunck. 



Yellow. 



Citron-yellow. 



Obtained by Schunck from madder-root. 



Obtained by Schunck from madder-root (Rubia ttnc- Dark-yellow ; it yields with 

 toria). , an alum mordant abright 



orange, with iron a clear 

 brown. 



Obtained by Schunck from Rubian, and held by him Citron-yellow, 

 to be identical with Rochleder"s Ruberythrinic acid. 



Obtained bv Schunck from madder-root. 



Bright-yellow. 



Obtained by Schunck from madder-root. 



Dark-yellow. 



