N. 0. COMBRETAOE.E. 547 



Thus we see that the extract when treated with benzene yielded a subs- 

 tance which is partially soluble in alcohol, and does not give any Iodine re- 

 action, reduces Fehling's solution when heated with dilute HC1 and is pptd. by 

 phosphotungstic acid. From these facts we may conclude that the substance 

 yielded from the treatment of the extract with benzene is glucosidal in nature, 

 the glucosidal body was first made soluble in absolute alcohol, which was then 

 evaporated, and a dry brown powdery residue was left ; it also gave no reac- 

 tion with Iodine, reduced Fehling's solution when heated with dilute HC1. 



The extract was then treated with chloroform in the same way, and a gum- 

 my substance was obtained which either gave Orcin reaction nor reduced 

 Fehling's solution even when heated with dilute hydrochloric acid. 



The extract was then further treated with absolute alcohol when a reddish- 

 brown-colouring matter was separated out. 



It gave no reaction with petroleum either. Tannic acid was estimated 

 by Allen and Pleteker 4 s method and total tannin (including glucotannic acid, 

 etc.) obtained was 12 per cent. 



The bark was then burnt and the ash yielded was 30 per cent., most of 

 which was calcium carbonate, but traces of sodium carbonate and chlorides 

 of the alkali metals was also obtained. Sugar estimated from the original 

 solution was 17 per cent. 



Thus we see that the extract from the bark yields— 



1. Sugar. 



2. Tannin. 



3. A colouring matter. 



4. A body glucosidal in nature. 



5. Carbonates of calcium and sodium and traces of chlorides of alkali 

 metals. (Food and Drugs No. 1 pp. 22 et seq.) 



495. T. tomentosa, Bedd. h. f.b.i., ii. 447. 



Vern. : — Asan (H.) ; Piasal (B.) ; Ain (Bomb.) ; Kurruppu- 

 maruta-maram (Tarn.); Maddi (Tel.) ; Hatana, Matnak (Kol.) ; 

 Ain, raadat, yen, sadada, saj (Mar.) ; Ain (Guz.) ; Matti, kari- 

 matti, banapu, tore matto-madi, aini (Kan J Sain (Bijnor) ; Sadar 

 (Bundelkhand). 



Habitat : — Very common in Deccan and the Sub-Himalayan 

 tracts of the North- West Provinces, Nepal and Sikkim. 



A large deciduous tree, trunk tall, regularly shaped. Bark 

 rough, grey to black, with long, broad, deep longitudinal 

 fissures and short, shallow, transverse cracks, inner substance 

 red when fresh. Sapwood reddish white ; heartwood dark brown, 

 hard, beautifully variegated with streaks of darker colour, 

 showing on a radial section as dark streaks which are generally 

 undulating. Branchlets, inflorescence and young leaves clothed 

 with short rust-coloured pubescence. Leaves coriaceous, hard, 



