SECTION Vlll. 



U9 



understanding, it is merely (as the Schoolmen say) taking- the objective 

 for the subjective, or vice versd^ as may suit the circumstances of tLe 

 case. 



Note II. Page 191. 



I am not certain, if " Janker " be a term known to the English 

 wood-merchant. In Edinburgh, Glasgow, and other great towns in 

 this kingdom, a pole or beam, from fifteen to thirty feet long, of great 

 strength, and fortified with iron, when mounted on a crossbar, with a 

 pair of high wheels at each end, is called " a janker ;" and the immense 

 logs of wood which are transported, by means of it, from one place to 

 another, are swung under the axle, and consequently under the pole 

 also of the machine. 



In the transporting or the planting of spreading trees with a machine 

 constructed on this model there could be no room for the tops, because 

 the branches would be chafed to pieces, and destroyed by the hind 

 wheels. But were the top to be much lightened, or still more, were it 

 to be pollarded, as is often done in both Scotland and England, and 

 reduced nearly to a log of wood, the janker would act as a most efficient 

 implement, and very heavy subjects might be removed by it. More- 

 over, the work would be executed far more rapidly, and at a fourth 

 part of the expense of the platform, and the preserving of the upright 

 position of the tree. I have sometimes thought that it might be 

 practicable to apply this sort of machine with advantage to the pre- 

 servative system, by making the length of the pole equal to the full 

 height of the tallest tree you mean to remove, and so the hind wheels 

 would raise the top sufficiently off the ground. If the fore wheels, for 

 example, were six feet high, the hind ones might be eight, which would 

 afford sufficient room for elevation ; and thus the branches might 

 perhaps be managed with greater facility and safety than by any other 

 method. But the use of such a machine would necessarily be limited 

 to operations on an open surface. It must be all "plain sailing," as 

 the seamen say, and no sudden turns, intricacies, or narrow passes, such 

 ad often occur, would be admissible in its route. 



2 F 



