22 
SoutTH-\WeEsTERN DIstricr. 
Varieties of Trees—Jarrah, red gum, flooded gum, banksia, 
white gum, blue gum, peppermint, vate, blackbutt. 
Method and Time of Destruction——Great diversity of opinion 
exists apparently, both as to the method of killing the trees, 
whether by ring-barking or sap-ringing, and also as to the period 
of the year during which the work should be done. There is, how- 
ever, a Unanimous opinion that jarrah, red gum, banksia, and black- 
butt should be destroyed by ring-barking, and yate, peppermint, and 
flooded gum ly sap-ringing. In the ease of blue gums the advo- 
eates of sapping and ring-barking are equally divided, while in 
the case of white gums the advocates of ring-barking are in a large 
majority. Our correspondent does not enumerate the trees in his 
locality (Bridgetown), but advises “all to sap when the trees are in 
flower”; while another correspondent would “advise all new-comers 
to adopt ring-barking.” 
In regard to the time of the vear when the ring-barking or 
sapping should be done, there is a wide range of opinion. All the 
months in the year are recommended, except April, May, and June. 
There is a slight preponderance of opinion in favour of ring-barking 
the trees from October to February. One correspondent at Jayes 
reports having killed jarrah and white gum in three days by ring- 
barking in February. July to October apjears to be the best 
period for destroying the red gum; January, February, and March 
for the blue gum, white gum, flooded gum, peppermint, yate, and 
black-butt. All, with one excertion, ueree that the banksia may be 
killed by ring-barking at any period of the year, the dissentient 
being in favour of the months of January, February, and March. 
Yate requires ringing in January, as if rung at that time it 
will die in a few days, and will not throw up suckers, which it will 
do if rung in winter months. . . . . . White gum you can 
ring at any time when the bark strips freely; in fact, it is no use 
ringing any tree if it will not bark freely. 
Blackboys.—The grazing capacity of land is much increased 
by cutting down blackboys or grass trees or chopping off their head. 
Stock much prefer cleared land and grass, trefoil and herhage 
soon become noticeable. Where the cost of handling and railing 
blackboys permit of their trucking to some distance, it is found 
that a ready market now exists for them. The Rowley Forest 
Laboratory at Maylands is capable of handling large quantities of 
these at their works, which is concerned with the extraction from 
Blaeckboy and Zamia of sago, tar, colouring dyes, perfume, ete. 
