xv, 4 Oshima: Formosan Termites 355 



Table XIII.- — Relationship between resistance and weight of various woods. 



Wood. 



Ipil 



Molave 



Macaasim 



Mancono 



Aranga 



Banuyo 



Palo maria ... 



Dung-on 



Bansalaguin. . 



Batitinan 



Pagatpat 



Tindalo 



Betis 



Yellow narra . 



Calantas 



Amuguis 



Acle 



Guijo 



Apitong 



Red narra 



Lanete 



Malugay 



Degree of weight. 



Heavy 



do 



do 



Very heavy 



Heavy 



Moderately heavy . 



do 



Heavy 



do-- 



do- 



do 



do 



do 



Moderately heavy . 



Light 



Heavy — 



do— 



do— 



—do 



—do.— 



—do— 



—do— 



Damage. 



Per cent, 



4.00 

 8.00 

 18.42 

 24.00 

 38.46 

 39.22 

 42.86 

 45.45 

 56.00 

 60.00 

 60.00 

 60.00 

 60.47 

 60.87 

 65.00 

 69.23 

 69.77 

 71.43 

 81.88 

 85.45 

 87.50 

 90.00 



Table XIV. — The weights of woods of various specific gravities. 



Very heavy 



Heavy 



Moderately heavy 

 Light 



Specific 

 gravity. 



| Per cubic 

 meter. 



90 or + 



70 to 90 



50 to 70 



50 or — 



Kilos. 

 900 or + 

 700 to 900 

 500 to 700 

 500 or — 



Per cubic 

 foot. 



Lbs. 

 56 or 4 

 44 to 56 

 31 to 44 



31 or — 



As shown in Table XII, mancono and arang-a, which are in- 

 cluded in the group "very hard," are more seriously attacked 

 than ipil, molave, and macaasim of the group "hard;" banuyo 

 is less attacked than harder woods, such as palo maria, tindalo, 

 etc.; calantas, a soft wood, is also less attacked than tucang- 

 calao, amuguis, acle, etc., which belong to the group "hard." 



Table XIII shows that ipil, molave, and macaasim, which are 

 included in the group "heavy," are less attacked than very 

 heavy mancono; that dungon, bansalaguin, batitinan, etc., are 

 more seriously attacked than banuyo and palo maria of the 

 group "moderately heavy;" and that amuguis, acle, guijo, etc., 

 are also more seriously attacked than calantas, a light wood. 



