To the Editor.— Cronenwett et al1 have jumped to a completely unwarranted conclusion from the data they present in their article on bottle use, that "no support was found for the nipple confusion hypotheses" Rather, there is no support to make such a statement. There seems to be confusion in the minds of the authors by what is meant by "nipple confusion" or "nipple preference." In the first place, those of us who handle breast-feeding problems on a daily basis would not argue that the occasional bottle, introduced once breast-feeding was well underway and both mother and baby were doing well, would cause serious problems in most instances.