The results of intermediate band photometry of late-type stars in the infra-red indicate that the continuous radiation of these stars deviates noticeably from that of black bodies. An emission peak near I 6 was observed in agreement with other observations. It is suggested that the prominence of the i 6 !L peak is a result of a combination of H- and H2- on the one hand and H20 on the other as sources of continuous opacities. In G and K stars, this feature is primarily caused by H- and H2-. In the M stars it is predominantly caused by H2O, but the contribution of H- and H2- tends to enhance this feature over other peaks that are also caused by H2O.