PageHeader : Funkcialaj Ekvacioj, 9 (1966) , 163-170 Title : Note on Perturbation and Degeneration of Abstract Title : Diff.erential Equations in Banach Space AuthorInfo : By Hiroki TANABE and Michiaki WATANABE AuthorInfo : (Osaka University and Niigata University) section : 1. Preliminaries. section : 2. Singular perturbation for $(1)_{\epsilon}$ . section : 3. Degeneration of $(2)_{\epsilon}.$ section : 4. Example. section : References