122 



On the McamireiiiciU of Ti)nbcr. 



Here larger fVustuni = 98"175 i^^tX^ 

 and smaller iVustum = 35"S4S feet. 



133*518 feet, content of both frusta. 

 And if fi-om the real content, 136-136 feet, 

 be taken the foregoing content, 133*518 teet, 



there are left in favour of the buyer 2*618 feet 



It is worthy of notice that the content, given by the cus- 

 tomary method, of this whole log was 98*7 leet ; whereas the 

 larger frustum measured conically is really 99-185 feet, the lat- 

 ter being for only half the length ; and by the foregoing me- 

 thod of cylinders die larger frustum yields 98*175 feet, being 

 only about half a foot less than the whole customary content ; 

 hence the butt half, a, b, c, measured truli/, yields more timber 

 than the entire log measured in the usual 'soay! ! ! 



I now proceeti to show my 



Second original Method. 



As an example, I give a copy of a page of my manuscript 

 table, prepared expressly for this purpose. 



This 



