38 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 
that time it will be possible to arrange a better series of Age 
classes. 
As regards the standards, the following proportion per acre 
is advocated :-— 
No. of Trees. 
Standards of four rotations, . ; ig 
Standards of three rotations, . : ie 
Standards of two rotations, . ’ Ae 
Tellers of one rotation of underwood, - 20 
Saplings planted after last felling, . » 58 
Total per acre, «-) (Om 
It is said that this should give about 1000 cubic feet of 
standards, quarter-girth measure, per acre, when the woods 
are brought into a normal condition. 
Coming to the coniferous woods, no fixed rotation has been 
prescribed for them at present; but a statement of annual 
fellings and thinnings has been drawn up, which will regulate 
these operations for the coming fifteen years. Meanwhile 
instructions have been given in regard to the species to be 
planted, and the present irregular condition of the wood will 
be gradually improved. 
As may be imagined, only a rough estimate of the future 
yield of the woods is possible, but Professor Fisher makes the 
forecast that the broad-leaved woods may eventually give a 
gross return of at least 25s. per acre annually, while “the 
coniferous woods will produce #2, 10s. per acre, giving 
altogether an income of #2000 per annum.” ‘The net profit 
in the past, taking the average of ten years, has been £762 
per annum. 
Accompanying the Report are Appendices giving a detailed 
description of each compartment, together with its proposed 
future treatment. There are several tables and a list showing 
the dates when the various woods on the estate were planted. 
The whole scheme is thoroughly practical, and provides an 
excellent example of what a provisional working-plan ought 
to be. 
