PROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 705 



36.— THE PRESERVATION OF WOOD AGAINST TERMITES. 



By T. Bainbrigge Fletcher and C. C. Ghosh. 

 During the last eight years we have made numerous tests of various 

 proprietary preservatives advertised for use in India as protective to 

 wood liable to attack by Termites. The following tables show the 

 results :■ — 



Creosote. 



The great difference in effect of appUcation of an incomplete treatment in cold creosote (28 months) 

 and a complete treatment in hot creosote (more than 81 months) is evident from the above. Wood to 

 be properly treated with creosote should be immersed in a tank or other receptacle heated to 80° to 

 90° C. and allowed to cool down gradually. The cost of treatment is relatively high, owing to the large 

 amount of creosote absorbed, but it is better to have a large degree of absorption if more than relatively 

 temporary protection is desired. For outdoor purposes, where long endurance is required imder under- 

 ground conditions, thorough impregnation with creosote is likely to yield good results. 



Carbolineum. 



33 Jarrah . Painted with as 

 I much cold Carboli- 



neum as could be 

 soaked up by dry 



21st Oct lOlir 



Mango 



Teak 



Deal 



"Dipped half-way 

 into cold Carboli- 

 neum and allowed 

 to soak maxin 



11th April 1916 

 1st Aug. 1918 . 

 16th Sept. 191.3 

 11th Oct. 1912 



1916. 

 wood 



Attacked 

 through 

 untreated 

 ■ ends. 



