232 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



purpose of carrying out the provisions of the Development and 

 Road Improvement Act. 



Appointment. 



Mr E. P. Stebbing, of the Indian Forest Service, has been 

 appointed to the vacant Lectureship in Forestry at the 

 University of Edinburgh. 



Bordeaux Mixture. 



The Journal of the Board of Agriculture for May 191 o, 

 contains an article warning fruit-growers to exercise caution in 

 the use of Bordeaux Mixture for spraying their trees. An 

 article on the making and application of this mixture appeared 

 in the Journal for January 1 9 1 o. 



Tree-Felling by Machinery. 



The operation of felling trees by machinery is now in 

 successful operation in a tract of forest land within about a 

 mile of the village of Tarbert, on Loch Fyne. This is the first 

 successful attempt to fell trees by machinery made in the 

 United Kingdom. The plant, which consists of a steam saw, 

 a small boiler, and a considerable length of flexible steam hose, 

 requires four men to work it. One man works the machine, 

 another drives the wedges into the cut so as to fell the tree in 

 the required direction, another stokes the boiler, collecting and 

 chopping the brushwood with which it is fired, while the fourth 

 man levels a space by the side of the tree next to be cut, on 

 which he beds a light wooden frame to form a cradle for the 

 machine. The machine itself, the weight of which does not 

 exceed 4 cwt., is easily carried from tree to tree by the four men, 

 and it will fell from ten to twelve trees, averaging 30 inches 

 diameter at the ground level, in an hour, sawing them off close to 

 the ground and thus saving a considerable portion of the best 

 part of the tree, which would be cut into chips if felled with the 

 axe. 



The machine consists of a steam cylinder 5 inches in diameter, 

 having a long stroke and attached to a light wrought-iron frame, 

 upon which it is arranged to pivot on its centre, the pivoting 

 motion being worked by a hand-wheel turning a worm which 



