CHEMICAL PROPERTIES AND MOLECULAR STRUCTURE OF DERIVATIVES OFsym-HEPTAZINE [1,3,4,6,7,9,9b-HEPTAAZAPHENALENE, TRI-1,3,5-TRIAZINE]

CONTENTS I. Introduction 400 II. Does melam exist? 400 III. Melem 401 IV. Melon — the material of Pharoah's serpents 402 V. Cyameluric acid, its salts and amides 403 VI. Hydromelonic acid 404 VII. Other derivatives of sym-heptazine 404