9 



governed chiefly by the amount of light admitted to the undergrowth. Were 

 the crop untouched by man the system would develop into that of " Jardinage 

 Nature! " or true selection system and, as this system in practice produces the 

 class of timber required it is without doubt the system that should be adopted. 

 As mentioned above the regeneration and therefore the future constitution of 

 the growing stock is principally governed by the amount of light admitted to 

 established seedlings and, as many of the valuable species require varying 

 amounts of light and shade, it will be further necessary to introduce improve- 

 ment fellings based on the requirments of the various species. 



38. To frame a Working-plan in which calculations are to be made for 



all 15 species would in this instance involve calcula- 

 tions productive of no value in practice. Teak and 



Blackwood are found only in small quantities, so may be neglected for the 

 purpose of arriving at the possibility. It is proposed to base the calculations 

 of the rotation and yield on the four most largely represented and valuable 

 species, '. e., Matti, Nana, Kindal and Jamba, and to place a check to over- 

 cutting of the remaining species by fixing a minimum girth limit, to which 

 will be added a check by area. 



39. As set out in paragraphs 7 and 17 (d) the soil varies considerably, 

 For the most part it is fair to good, though in certain areas it is poor. The 

 area has therefore been divided into two quality classes for which different 

 exploitable sizes have been adopted. From careful examination of many trees 

 cut from both 1st and 2nd quality areas and, taking into consideration the rate 

 of growth shown on prepared sections, also the fact that logs of large dimen- 

 sions realize far better prices than those of moderate size, the following 

 dimensions have been fixed as the minimum exploitable girths of the various 

 species : 



40. Matti and Nana can reach the girth of 7 feet, without becoming in 

 any way unsound, while Kindal owing to the fluted nature of the stem in mature 

 trees cannot be put in a lower class, otherwise the squared log would be below 

 its best marketable price. The rate of growth of Jamba after it has reached 

 6 feet in girth is so slow that it would not be justifiable to put it into the 

 2nd class. As regards Teak, in the adjoining areas of Arbail it is worked 

 under a 7 feet girth, but here, owing to its proximity to the sea together with 

 the low elevation at which it is found, it is thought better to place it in the 

 3rd class. 



C. The fellings. 



41. It is proposed to exploit Matti, Naua, Kindal and Jamba as the 



principal species and Teak, Sissum, Heddi, Honni, 

 Jambul, Bharnigi, Dhamni, Apta, Womb and Kharr 



The general working- scheme. 



B 990-9 



