STATE AND OTHER FORESTS OF FRANCE. 8 1 



which are managed by the officers of the ordinary service, were 

 worked under a rotation of 144 years, divided into four periods of 

 36 years. During the second period, which commenced in 1904, 

 they must, iti the first periodic block, complete the regeneration at 

 all points where it is not already completed, and make cleanings 

 and thinnings in the regenerated crops ; in the second periodic 

 block, carry out the regeneration as high forest ; in the third, 

 make preparatory cuttings ; and in the fourth, cuttings of coppice. 

 The regeneration fellings in the first periodic block are confined 

 to trees of large size, and governed by the development of the 

 seedlings. They are controlled by volume. All other cuttings 

 are made by area. Whenever the second periodic blocks shall 

 have been entirely gone over by seeding fellings, and it is desired 

 to make in them secondary and final fellings, the yield will be 

 fixed by volume. 



The fourth and eighth working-sections of high forest are 

 attached to the Experimental Station of the National Forest 

 School. The new scheme fixed the rotation of the former at 

 120 years, and that of the latter at 150 years. The number of 

 periodic blocks and periods is four in the fourth working-section 

 and five in the eighth. All cuttings are made by area. 



Although seedlings grow slowly in the Forest of Haye, and 

 thus render the regeneration fellings difficult to conduct, it may 

 be said that on the whole the conversion into high forest 

 progresses satisfactorily. The failures, which have occurred 

 rarely at some points, are due to faults of execution, and not to 

 defects in the management scheme itself. 



Average revenue and expenses during the last ten years : — 



Revenue. 



Principal produce, . 646,360 cubic feet, . £,']Zo\ 11 9 



Minor „ . . 43 .S 13 9 



Total, 646,360 cubic feet, £,1111 5 6 



Expenses. 



New Works, ^^69 12 6 



Works of Maintenance, . . . 468 16 6 



Supervision, 433 i 6 



Total, ;^97i 10 6 



Nancy, %ih July 1904. 



VOL. XVIII. 



