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made to utilize ohia lumber for insulator pins on telephone and 
telegraph poles. The green wood, (probably sap wood), was 
used for this purpose, and after the pins were turned and de- 
livered on the coast they warped and twisted so badly that they 
were entirely unfit for the use for which they were intended. 
Felling ohia trees (note woodehopper in the lower left of picture), 
Puna, Hawaii. 
Again, an attempt was made to use ohia for paving blocks. The 
main qualities necessary in a good paving block are durability, 
close-grain, and the power of resisting abrasion. These qualities 
are found to a high degree in the ohia. However, no care was 
used in laying the blocks and in covering them, with the result 
that the ohia blocks were declared to be unsuited for paving be- 
cause such pavements were found to be slippery. There is no 
