90 THE USES OF PLANTS. 



Royal Horticultural Society, in 1863.* It is used in 

 cough-lozenges. 



Myrospermum Pereirce^ Royle, a tree of Central 

 America, is the source of BALSAM OF PERU, now but 

 little used. In 1861 the tree was successfully intro- 

 duced into Ceylon. f 



Ccesalpinia Bonducella, Roxb., and C.Bonduc., Roxb., 

 produce the seeds known as ' NlCKER NUTS,' used in 

 India, and recommended here, as a tonic. 



Hcematoxylon Campechianum, L., LOGWOOD, a 

 Central American tree, now naturalized in Jamaica, 

 and largely imported as a dye, has been used in diar- 

 rhoea. 



Cassia acutifolia, Delile, and C. angustifolia, Vahl, 

 shrubs native of North Tropical Africa, from Timbuktu 

 to Nubia, and of Somali-land, Arabia, and the Panjab 

 respectively, are the main sources of SENNA. The 

 leaves of the former are known as Alexandrian or 

 Nubian ; those of the latter as Bombay or Tinnevelly 

 Senna. In addition to oxalic, tartaric, and malic 

 acids, Senna contains a substance described as Cathar- 

 tic acid, on which its valuable purgative properties 

 may depend. J C. marilandica, L., is the source of 

 AMERICAN SENNA. The saccharine pulpy lining of 

 the transverse septa in the pods of the Indian tree, 



* ' Journ. Royal Hort. Soc.,' May, 1864 ; 'Pharm. Journ.,' vi 

 (1865), p. 60; Bentlev and Trimen, ii, pi. 84. 



-f D. Hanbury, ' Pharm. Journ.,' v (1864), pp. 241,315 ; J. 

 Attfield, ibid.) pp. 204-6, and H. Baillon, ibid.) iv (1873), p. 382 ; 

 Bentley and Trimen, ii, pi. 83. 



J ' Pharmacographia,' pp. 189-194 ; Bentley and Trimen, ii, pi. 

 90,91. 



4 Pharm. Journ.,' v (1846), p. 345 ; ' Kew Museum Guide/ 

 p. 49 ; Bentley and Trimen, ii, pi. 88. 



