tags are of copper, they shall "be fastened to the panels with copper 

 nails . 



5. The support "bar shall he suitahly painted to prevent corrosion. 

 The wood test panels must not he painted nor treated wit±i any other 

 coating or preserrative . 



6. A suitahle anchor shall he suspended from the lower end of 

 support har to hold the test hoard in place. 



7. Panels shall he arranged on the support haar in numerical 

 order heginning at the top with panel numher one, except that panel 

 marked "C" shall he placed hetween panels numher k and 5- 



8. Test hoards shall he placed in protected locations where 

 they will not he suhjected to damage hy vessels, or exposed to theft. 

 They shall he suhmerged with the lower end approximately 2 feet ahove 

 the mud line. 



9. At the end of the first month after panels are suhmerged, the 

 set shall he taken from the water and Panel Wo. 1 and the "Control Panel" 

 marked "C" shall he removed. A new panel marked No. 1 shall he fastened 

 to the support har in the same position as that occupied hy the original 

 No. 1 panel, likewise a new control panel mfirked "C" shall take the 

 place of the control panel "C" which had heen removed. 



10. The test hoards shall he kept out of the water the minimum 

 time practicahle for the removal and replacing of panels, in order that 

 marine organisms on the panels may not he damaged or killed hy long 

 exposure to air. 



11. The foregoing procedure shall he followed at regular monthly 

 intervals hy removing and replacing the "C" panel and the numhered panels 

 in successive order; i.e.. No. 1 at the end of the first month, No. 2 



at the end of the second month, etc. The test shall not stop with the 

 eighth panel, hut shall continue until notice to discontinue is received. 



12. Panels removed in accordance with paragraph 9 shall not he 

 cleaned, hut shall he wi'apped in several thicknesses of heavy paper and 

 properly packaged for shipment or mailing. In each package a penciled 

 note shall he included giving location of test and date when panels 

 were removed. 



15. Panels shall he forwarded, prepaid, to: 



W. F. Clapp Lahoratories 

 Dxjxhury, Massachusetts 



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