has given an example of a space which fails to be a 3-manifold at each of a Cantor set of points, but such that the cartesian product of the space and F1 is homeomorphic to F4 [4]. This result has led to the study of other nonmanifold factors of F4 ; a summary of results in this area may be found in Armentrout's paper in [5].Bing's example arises from a decomposition of F3 into points and arcs; the defining sequence for the arcs consists of collections of double tori resembling bones, hence the example is generally called the dogbone space. In this paper we generalize Bing's result with the following theorem. Standard notation is used with the following adaptations. We use 5(^4, e) to denote an e neighborhood of the set A, Cl denotes closure, and equality of topological spaces indicates only that the spaces are homeomorphic. As a convention we use C to denote the "middle thirds" Cantor set on [0, 1]. We let C=C x [0, 1 ] and call any set homeomorphic to C a Cantor set of arcs.The material in this paper was contained in a dissertation [2] written at the University of Tennessee under the direction of Ralph J. Bean to whom the author wishes to express his gratitude.To prove Theorem 1 we generalize the technique used by Bing in [4]. We define a decomposition B of Fn+1 by B={(g, w)eEnxE1: ge G, weE1}. The identity map is a homeomorphism of En¡GxE1 onto En+1¡B. A pseudo-isotopy / of En+1 x [0, 1] onto Fn+1 is then constructed in such a way that/(x, 0) is the identity map and/(x, 1) takes each element of B onto a distinct point of En + 1. This establishes that En+1IB=En + 1 [4], [8].