In compliance with the requirements for the first step in your application procedure~I am enclosigg the preliminary outline of a project entitled "Mechanism~ of Spontaneous and Mutagen-Induced Deletions", for which I seek support from The Council for Tobacco Research.I am including the following appendix material:l) a manuscript in press in Mutation Research, 2) page proofs of an article to appear in a Symposium volume, and 3) a table summarizing results which are being prepared for publication, and which I refer