314 



of the same strength as that on the forested hill, was deeply 

 guillied on all its sides, its drainage river flowed in a deep gorge 

 or spread out over boulder-strewn flats and built a broad delta in 

 a very muddy lake. To emphasize the contrast, two gold fish were 

 placed in the clear lake but these proved so distracting from the 

 main purpose of the model that they had to be removed. Behind 

 the mountains a poster enumerated the various advantages of 

 forests and the disadvantages of barren slopes. 



Flanking the erosion exhibit were placed three racks containing 

 a total of ninety sawed samples of native and introduced woods 

 which are part of the permanent forestry exhibit in the Honolulu 

 office. A printed label on each board gave its scientific and 

 English or vernacular names. A surprising amount of interest 

 was shown in these samples, particularly by men and by native 

 Hawaiians. These latter spent much time spelling out the native 

 names and turning the boards to compare the finished and 

 natural faces, seeing for the first time the grain of woods which 

 they had known all their lives only as trees in the forest. 



During the three days of the Fair several thousand packages 

 of Congressional garden seeds were distributed to the citizens and 

 school children of Maui. In the opinion of the agricultural judges 

 the exhibits of the Board of Agriculture and Forestry were both 

 instructive and attractive, and in recognition of this three 

 "special premium" ribbons were awarded the display. 



FORMOSAN TERMITES AND METHODS OF PRE- 

 VENTING THEIR DAMAGE/:^ 



By Masamitsu Oshima 

 Of the Institute of Science, Government of Formosa 



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 difficult to 

 destroy. Moreover, as stated by Dr. K. Escherich :i "Nichts ist 

 vor ihren Kiefern und zerstorenden Sekreten sicher ausser Eisen 

 und Stein." (Nothing is safe from their jaws and destructive 

 secretions except iron and stone). Such being the case, not only 

 is the extermination of these insects almost impossible, but also 

 preventive measures against their damage are difficult to apply. 



Fortunately, Japan is located in a temperate region ; and, there- 

 fore, her people have not been obliged to pay attention to these 



^Die Termiten (1909) 



^Philippine Journal of Science, Vol. XV, No. 4. 

 formidable pests. However, one species, Lcucotermcs speratns 

 Kolbe, which very often causes somewhat serious damage to 

 wooden structures, has been recorded in Japan since 1724. About 



