198 PITHOEA. 



A square beam (a) is placed perpendicu- 

 larly, so as to be turned upon a pivot at 

 its base. To this a transverse beam (b) is 

 fixed by a peg or joint, so that its ex- 

 tremity may be moved up or down, and 

 teeth are cut in this beam, to hang the 

 kettle upon, at a greater or less distance 

 from the upright support. Underneath is 

 another shorter piece of wood (c), forked 

 at the extremity to catch the lower teeth 

 of the last-mentioned beam, and fixed like^ 

 wise by a joint at its base, in order to be 

 tilevated more or less at pleasure. The ad- 

 vantages of this contrivance are many. 



