•382 Mr A. Galletly on the [sess. liii. 



With naphtha, . 2026 per ceut. 



With ether, . . . 5-200 



With alcohol, . . 7-418 



The naphtha extract from this species is a soft yellow 

 substance without the odour, or at least without the distinct 

 odour, of ordinary pine resin, which that from some other 

 species of Dalhergia gives on heating. 



On the other hand, the resins extracted by ether and 

 alcohol, which are almost the same in their nature, nearly 

 agree in their characters with those obtained from several 

 other dark woods belonging to this genus. These dark and 

 brittle resins from the cultrata species are — 



1. Insoluble in bisulphide of carbon. 



2. Do. in spirits of turpentine. 



3. Do. in olive oil. 



4. Slightly soluble in benzole. 



5. Do. in chloroform. 



6. Soluble in acetic acid. 



7. Readily soluble in acetone. 



Sal — Shored rohusta. — This is a large gregarious tree form- 

 ing extensive forests in India. It yields one of the most 

 important woods of that country, and is hard, heavy, and cross- 

 grained. Gamble says of this timber that it seasons with 

 difficulty, that during tlie process it dries with great 

 rapidity on the surface, while beneath it remains as wet as 

 when first cut, and evaporation goes on afterwiirds with ex- 

 treme slowness. Even when well dried, it absorbs mois- 

 ture with avidity in wet weather. Nevertheless, when 

 once thorougldy seasoned, it is a wood which stands almost 

 without a rival for strength, elasticity, and durability. Sal is 

 the timber most extensively used in Northern India for con- 

 structive purposes, being in request for piles, parts of bridges, 

 railway sleepers, and house carpentry. 



The Sal tree, when tapped, yields large quantities of a 

 pale, transparent, aromatic resin called dammar. 



Wood of Shorea rohyMa (specific gravity, '970) gave 

 resinous extract — 



With naphtha, . . TUOO per cent. 



With ether, . . . -920 



With alcolKj], . . 8-020 



