The state of knowledge on emissions from municipal incinerators is reviewed with recommendations for needed work. The results of an experimental study of gaseous emissions, refuse, quench water, and residual ash from four municipal incinerators in the New York City metropolitan area are described. The tabulated data indicate that municipal incinerator gaseous effluent is significantly richer in inorganics such as hydrogen chloride, sulfuric acid, and sulfur dioxide than in organics such as hydrocarbons, aldehydes, alcohols, ketones, esters, and organic acids. Control of these emissions is needed to eliminate corrosion. Limitations control of these emissions in the general literature suggest the need for supplementary and new studies. Specific research areas are recommended. An annotated bibliography of books, reports, periodical references, and other miscellaneous publications is appended.