Ligno Concrete. 63 



resistance to tension, taking that of iron at 5 tons per sq. inch and that 

 of greenheart at one-fifth its. ordinary ultimate resistance as given m the 

 dreceding table becomes ^ T 



It is obvious therefore that at present prices a very considerable 

 saving may be effected by employing greenheart reinforcement in lieu of 

 iron or steel, and as soon as the advantages of ligno concrete are more 

 widely known and appreciated the writer anticipates a large market for 

 greenheart reinforcement, while many of our other hardwoods, e.g., 

 Wadara and Mora, will also probably be found suitable for such employ- 

 ment when their resistance to direct tension has been ascertained 



