til 3 



the tree, on \\\c balancing principle, a " view of the machine 

 in motion" will be found in the engraving, as taken on the spot 

 by an ingenious artist. The tree delineated is a beech of 

 about eight-and-twenty feet high, with a stout stem, a beau- 

 tiful top, and with roots more than twelve feet long ; so that 

 the whole is calculated to form a load of considerable weight. 

 The mode of maintaining the balance, of bundling up the 

 roots, of compressing and preserving the branches ; as also 

 the various functions of the steersman, the balancemen, and 

 their assistants, may all probably be better apprehended in 

 this view of their united efforts, than by any verbal descrip- 

 tion. The reader, however, may compare the two, as they 

 will be found greatly to aid each other. 



It is easy to apprehend, that, with a machine so constructed, 

 the person stationed at the end of the pole, possesses the 

 same complete power over the direction of it, as the steersman 

 over that of a boat ; but with this disadvantage on the side 

 of the former, that the machine is far more difficult to manage 

 than the boat in the water, owing to the greater unevenness 

 of the surface of ground, and the extraordinary length of 

 the pole, as compared with the rudder, thereby causing a 

 much more sudden impulse to be communicated to the ma- 

 chine than to the boat. The steersman of the machine has, 

 for that reason, a far more difficult part to perform, in which 

 much judgment as well as strength is called forth, and where 

 one assistant, and sometimes two or three, are requisite to 

 aid him in so laborious a task. 



The above mode of balancing the tree between the axle, 

 which is the centre of gravity, and the extremity of the pole, 

 I greatly prefer, on every occasion where it can be adopted, 

 to that of having recourse to the third wheel. This addition 

 to the machine could seldom be made, with such extensive 

 tops as the park-trees removed here usually have, without, 

 severe injury to the branches. But it will be found useful 

 with long-stemmed, or very heavy subjects of any sort, espe- 



