WOOD 



PRESERVATIVES 



SOIL CULTURES TEST FUNGI 



LOGS 



BOARDS 



BLOCKS 



CONDITIONING 



SELECTING FOR 

 DENSITY 



NUMBERING 



OVEN -DRYING 



COOLING IN 

 DESICCATOR 



WEIGHING 



TREATING 

 SOLUTION 



TREATING 



WEIGHING 



SOIL AND WATER STOCK CULTURES 



FEEDER BLOCKS 



WEATHERING 



PETRI DISH 

 CULTURES 



STERILIZING 



LABORATORY 

 METHODS 



OUTDOOR 

 METHODS 



INOCULATING — 



CONDITIONING 



INCUBATING 

 2 WEEKS 



WEIGHING 



INCUBATING 

 16-18 DAYS 



STERILIZING 



PLANTING 



* ASSAY points; CHEMICAL 

 ASSAY OF SOLUTIONS OR 

 OF BLOCK RETENTION; 

 OR DETERMINATION OF 

 RESIDUAL OILS BY WEIGHT 



INCUBATING 

 90 DAYS 



TAKING DOWN 



WEIGHING 



CONDITIONING 



WEIGHING 



INTERPRETING 



Fig. 9— Flow chart of the laboratory biossay test procedure. Steps in the overall 

 processing must be carefully scheduled to provide adequate time for manipulation 

 and to assure the requisite quantity of even-aged cultures at the time the treated 

 and weathered test blocks are ready to go into test. 



153 



