185 



Fig. 64. (1) Test No. A13. Pine samples treated with paraffine alter the method of Dr. Paul Barlsch. 

 Photographed after 17 months' exposure. No. 7 is treated with paraffin only, No. 14 with 

 paraffine and copper iodide, and No. 24 with paraffine and arsenious iodide. .All heavily 

 attacked by Limnoria. Sample at bottom is untreated control. 

 (2) Test No. B18. Samples No. 8 and No. 15, treated as were No. 7 and No. 14 of test A13. 

 Photographed July 19, 1924, after 31 months' exposure. Attacked by Limnoria, Bankia 

 and Teredo. 



