236 DiADELPHiA DECANDRiA. Pterocarpus. 



It is readily, and almost totally soluble in either water or 

 spirit; the solutions are a pretty deep, but dull red, the spi- 

 rituous one was raflier more transparent, yet with a martial 

 solution it shows considerably less astringency than the wa- 

 tery solution, here it ditters from Butea gum ; ("or the spiritu- 

 ous solution of that, although seemingly less perfect than this, 

 shows rather more astringenry with the ciialybeate proof 

 than the watery solution. The solutions bear beings mixed 

 without decomposition. Vinegar added to them makes no im- 

 mediate chanoe: mineral acids debase their colour ; alkalies 

 heighten them. In short, this substance is so exceedingly 

 like the gum of the Buicas, that one analysis may serve for 

 both. The solutions after being kept ten days showed no signs 

 of change, and the same experiments were then repeated, 

 with the same success. 



JVote. It is highly necessary to observe that the above 

 analysis was made with the gum resiu fresh from the tree, 

 (how long it had adhered thereto I cannot say ;) because I 

 find, that when the gum of Butea frondosa is kept one year 

 or two, it is less soluble in water than in spirit, and the wa- 

 tery solution grows sooner turbid ; but at the same time this 

 turbid solution continues as when recent, to show with a mar- 

 tial solution, more astringency than the spirituous. 



The specimen of the Gum-Kino tree in the Banksian her- 

 harium, is perfectly like this. It is probable these are the 

 same, or very nearly allied. 



3. P. (lalbergioides. /?. 



Leaves pinnate; leaflets about u'ui(i,iihenmie, ovate-lanceo- 

 late, smooth. Panicle terminal. Stamens ten in two equal 

 portions. 



Andaman red wood. 



A native of the Andaman Islands, from thence, in 1794, 

 young trees were sent to the Botanic garden by Colonel 

 Alexander Kyd. These are now, 1809, Irom forty to eighty 



