X CONTENTS 



XI. KEY TO SUB-GROUP OF MEDIA INITIALLY SOLID. 



Group VII (Med. 2486-2543) 813 



A. Sub-group VIIA. Initially solid organic substrates. 



(Med. 2486-2516) 813 



B. Sub-group VIIB. Initially solid inorganic substrates. 



(Med. 2517-2543) 825 



XII. MEDIUM NAME INDEX 833 



XIII. CONSTITUENTS INDEX 869 



XIV. USE INDEX 891 



XV. AUTHOR INDEX 899 



XVI. REFERENCES 915 



