BARK. I 5 3 



The sum realised was £^7, 2s., and expenses, 

 £66, 4s. I id., thus leaving a clear net profit of 

 i^2o, 17s. id. 



No. 2. From fragmentary statements one is apt 

 to form wrong conclusions as to the amount of bark 

 a load (50 feet) of larch timber will yield, which the 

 following notes wdll exemplify. 



A conic section of a tree 20 feet long, 24 inches 

 in girth at the centre, contains nearly 5 cubic feet of 

 timber and 40 superficial feet of bark, each foot i lb. 

 weight when dry. Of this class of trees it takes 56 

 (=280 cubic feet of timber) to produce a ton of bark. 

 Another class of trees, 30 feet long, 28 inches girth in 

 the centre — 10 feet 2 inches 6 sec. cubic of timber, 

 and 70 superficial feet of bark — 32 such trees contain 

 326 cubic feet of timber, and yield one ton of bark. 

 Again, a larger class of trees, 36 feet long, 56 inches 

 girth in the centre, contains 48! cubic feet of timber 

 and 168 feet of bark — 13J of which contain 6'^j 

 cubic feet of timber, and produce one ton of bark. 

 Again, a still larger class of trees, 45 feet long, 96 

 inches girth in the centre = 180 cubic feet of timber 

 and 290 superficial feet of bark — seven such trees 

 contain 2 1 1 o cubic feet of timber, and produce one 

 ton of bark. The above four different sizes of trees 

 are given to show how much bark is yielded by them, 

 and how much more timber of the larger class than of 

 the smaller it takes to yield the same quantity of bark, 

 which all practical persons understand. 



The tannin property of the larch is about i 5 per 



