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APPENDICES 



I A SIMPLIFIED BIOASSAY TECHNIQUE FOR CYMBIDIUM 



MOSAIC AND ODONTOGLOSSUM RINGSPOT VIRUSES . . 66 



II AN EFFICIENT PROCEDURE FOR STAINING LARGE 



NUMBERS OF ELECTRON MICROSCOPIC GRIDS .... 70 



III COMPARATIVE DIAGNOSES OF ORCHID VIRUSES BY 

 LIGHT MICROSCOPY, ELECTRON MICROSCOPY, AND 

 SEROLOGY 7 3 



LITERATURE CITED 7 5 



BIOGRAPHICAL SKETCH 8 3 



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