386 Mr A. Galletly on the [ 



SESS. Liir. 



being a strong and durable wood. The Indians of Guiana 

 use it for the shafts of arrows and its bark for canoes. 



Purple heart wood (specific gravity, '927) gave resinous 

 extract — 



With naphtha, . . "100 per cent. 



With ether, . . . -690 



With alcohol, . . . 4-540 



Najjlitha Resin. — Quantity got exceptionally small ; solu- 

 tion yellowish, resin brown and hard, but not brittle ; not 

 readily soluble in cold alcohol. It gives a dark wine colour 

 with sulphuric acid, but no reaction with nitric acid. 



Ether Resin. — Solution a fine piiik, bleaching in the light ; 

 resin powdery, not very brittle, pinkish in colour. 



Alcohol Resin. — Solution a fine purple of a very deep 

 colcjur; resin of the same colour but very nearly black ; brittle, 

 scaling off basin. It is — 



1. Insoluble in bisulphide of carbon. 



2. Do. in cold turpentine. 



3. Do. in benzole. 



4. Do. in chloroform. 



5. Do. in olive oil. 



6. Soluble in glacial acetic acid. 



7. Do. in acetone. 



8. In heated turpentine it swells largely into a semi- 



transparent purple mass. 



Gives a very dark brown with nitric and an almost black 

 colour with sulphuric acid. 



Tulip Wood, the product of PhTjsocalymma fiorihundum, a 

 Brazilian tree. — This wood is only used for inlaying costly 

 furniture or small ornamental articles. Some specimens are 

 striped like the ]jetals of a tulip. Many woods are more 

 beautifully figured, but perhaps none are more delicately yet 

 richly coloured than some examples of tulij) wood. Its rose- 

 red Ijands or streaks render it extremely well suited for in- 

 laying, but its colour unfortunately fades somewhat if nuich 

 exposed to the light. The French Ijotanist Vesque calls it 

 le veritable hois de rose. 



It is hard ami heavy, and contains a considerable quantity 

 of resin, wliich can be seen by the naked eye in some of the 

 larger pores of the wood. 



