STORAX BARK. 



placed in iron pans to be again boiled. The colouring matter 1856 - 

 is taken up on cotton yarn [by dipping] several times in suc- 

 cession; it is then washed off and sprinkled on thin paper; when 

 half dry, the paper is pasted on light screens and thoroughly 

 exposed to the sun. The product is called in Chinese 

 Luh-kaou. In dying cotton cloth with it, ten parts are mixed 

 with three parts of subcarbonate of potash in boiling water. 



It is not used to dye silk on account of the expense, since it 

 is only a rough surface that takes it easily, and to colour silk 

 so much of the material must be used, that it would not pay. 

 All cotton fabrics, also grass-cloths, take the colour readily. 

 The dye does not fade with washing, which gives it a superiority 

 over other greens. It has long been used by painters in water- An unfading 

 colours, but the application of it to dye cloth was first made 

 only twenty years ago. If some method could be discovered of 

 applying it to silk fabrics, it would become still more useful. 



The dye is sent from Kea-hing as far as Shantung. 



ON STOKAX BAPiK. 



(StoraxrindeJ) 



AMONG the drugs formerly imported from the Levant is one 1854. 

 now of rare occurrence, known in works on Materia Medica as 

 Cortex Thymiamatis, Cortex Thuris, Thus Judworum or Nas- 

 caphtum, and also by the names Styrax rulra or Storax Bark. 

 Nothing satisfactory as to its origin has yet been ascertained : Botanical 

 by some authors it is supposed to be the produce of Styrax ri g in - 

 officinale, Linn., after the expression of the resin, as related by 

 Landerer, 1 and when ground, to constitute the Sty rax calamita 

 of the shops. By other authors it has been referred to Liqui- 

 damlar orientale, Mill., or even to the American L. styraciflua, 

 Linn. 2 



Be this as it may, the bark of Styrax officinale, as grown in 

 France, is entirely dissimilar to the Cortex Thymiamatis of the 



1 Pereira, Ehm. of Nat. Med., ed. 3, vol. ii., p. 1515. 



2 P. L. Geiger, Pharmacop. Vnivers. Heidelberg, 1 335, 8vo., p. 52. 



