Spectrograms of several stars of various types and of seven cool carbon stars have been obtained using the new Kodak IZ(2) emulsion and extending into the infrared as far as À11400. The plates were obtained with the Victoria three-prism spectrograph, dispersions at À10000 and À11000 being 133 and 163 A/mm, respectively. A general description of the spectra in this infrared region is given, and the results of measurements of the spectra of the cool carbon stars are tabulated. Of the fifty-six

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... orption features listed, between À 9670 and À11100, only the four strongest can be identified with certainty as the four heads (Xk 10872, 10926, 10964, and 11009) of the 0,0 band of the red CN system. The problem of further identifications is discussed, and while some evidence of the presence of weaker CN bands and certain atomic lines is found, it is concluded that further definite identification must await the securing of higher-dispersion spectrograms.