42 BOTANY OF BIHAR AND ORISSA. 



valleys, and especially along ravines in the higher hills. We can 



"iSf Tie Tern, R^^nfeSf iS 



The raising of the water 

 level by railway embanl m< tit.- will sometimes kill out the Sal and 

 convert a previous Sal forest into Terminalia. 



141. Mixed forest: Dry type.— Very dry aspects do not as a rule 

 grow Sal, but show a more xei not always of the 



same constitution. The components of these dry t: 

 , ! I ,-,_, ,,f licrl ,| lc para 1J-M Su it tn < m V< , <J > <y ' 



.1 / /■' 'hick corky bark, 



such as Erythrina suberosa, Coehlnspennum aos. V /piini>. 



The driest parts of the Central tract (see Chap. Ill) are parts -■! 

 Shahabad, Palamau ami (Java (Java is said to be the hottest 



mation, mw mostly sj£ub.J 



This was apparently a purely edapl 



i grows on other soils also in me 

 central Provinces." 



143. Khair type.—Sm] is apparently partly accountable for the 

 distribution of kha ■■■-,. It is a more crooked 



tree than the sub- Himalayan Khair and is apparently var. Catechu 

 proper. Its presence is not always due solely to the soil. In parts 



this category fires, grazing, etc n. and where the 



forests are protected the Khair disappears. It will not reproduce 



it>elf umlei shad, eithet bj seed „ , ,ppi With tie Kha i. Iii;;l 



nnis ri fore have originated on open land, is associated Woodfordia 



(a shrub of open ! , ' >iri»*>i ,,n nei nerrin. Stereo- 



xpemnim .-■„<,.. ~ . /.,„,, r^tm,,, in puri'ifl<»ti. 



Emblica officinalis I'h.-.- n , In- . i pedes. There also 

 occur Satin wood (< li!nm.r,/!n»), Adiuu mrdifolia, Mitragyna, Bridelia 



inner side of the curve has low flat ground frequently growing forest 



steeply graded streams are usually similar and evergreen. But 

 neither the Central nor Southern tracts possess the more beautiful 

 type of evergreen forest which occurs in the adjacent more humid 



