Rods and Rod Material. 



151 



The specimens of split-bamboo were of excellent qual- 

 ity, and of my own preparation. The six-strip hexagonal 

 piece was taken from an old and well-tried middle joint. 

 The angles of this were very slightly rounded. The 

 four-strip piece was put together with the rind inside, 

 for the purpose of comparison. The cedar was from a 

 very choice Florida specimen. 



Material. 



Specific 

 Gravity. 



Weight of 1 

 Cubic Foot. 



Snakewood 1.3718 



Beefwood 3090 



Bethabara 2140 



*Ironwood 176 



*Ironbark 142 



*Chow 116 



Greenheart (dark-colored) .0908 



*Jucaro Prieto 08 



Lancewood 1.0335 



*Kranji 1.029 



Split-bamboo: Six-strip hexagonal, rind outside .9915 



Bois d'Arc 9690 



Split-bamboo: Four-strip, rind inside 9678 



Greenheart (light-colored) 9643 



*Dagame 90 



Shadblow 8620 



Paddlewood .8363 



Ironwood (Hornbeam) 81 84 



Hickory 7963 



Ash./ 7786 



*Pingow 748 



Mahoe .6607 



Cedar (Florida) 6396 



85.74 

 81.81 

 75.88 

 73.50 

 71.37 

 69.75 

 68.18 

 67.30 

 64.59 

 64.31 

 61.96 

 60.56 

 60.49 

 60.26 

 56.10 

 53.87 

 52.27 

 51.15 

 49.77 

 48.66 

 46.75 

 41.29 

 39.98 



To facilitate computation, as is customary where abso- 

 lute accuracy is not required, the weight of a cubic foot 

 of distilled water was taken at 62.5 pounds. This table 

 does not bear out the statement heretofore made that 



