THE PHILIPPINE 



Journal of Science 



Vol. XV 



OCTOBER, 1919 



No. 4 



FORMOSAN TERMITES AND METHODS OF PREVENTING 

 THEIR DAMAGE 



By Masamitsu Oshima 

 Of the Institute of Science, Government of Formosa 



THIRTEEN PLATES AND FIVE TEXT FIGURES 



CONTENTS 



Introduction. 



Descriptions of the Formosan 

 Termites Injurious to Wooden 

 Structures. 

 Certain Habits of Coptotermes 

 formosanus shiraki. 



Different castes in the colony. 

 The foundation of a new colony. 

 Situation of the nest. 

 Damage to buildings and other 

 materials. 

 Principal Food of Coptotermes for- 



mosanus shiraki. 

 Termite-proof Building Construc- 

 tion. 

 Defects of the Termite-proof 



Building Construction. 

 Tests of the Relative Resistance 

 of Native and Exotic Woods. 



Relationship Between the Resist- 

 ance and the Physical Prop- 

 erties of Timber. 



Relationship Between the Resist- 

 ance and the Chemical Prop- 

 erties of Timber. 



The Volatile Constituents of 

 Cypress Pine. 



The Volatile Constituents of 

 Teak. 



The Volatile Constituents of 

 Foochow Cedar and Randai 

 Cedar. 



Studies on Camphor Green Oil. 



The Relative Effectiveness of 

 Preventives. 



Summary. 



INTRODUCTION 



One of the most serious problems in the Tropics with regard 

 to man's industry is to discover a method of preventing the 

 damage caused by termites. Because of their subterranean 

 habits and insidious methods of attack, termites are very dif- 

 ficult to destroy. Moreover, as stated by Dr. K. Escherich: 1 

 "Nichts ist vor ihren Kiefern und zerstorenden Sekreten sicher 



: Die Termiten (1909). 



167553 



319 



