usually Brackett $\gamma$ (), with strong lines of at 2.058 and 2.112 . When the lines are strong enough, one begins to see the Pfund series lines starting near 2.35  where they are just beginning to be separated at this resolution. There are also two unidentified lines at 2.199 and 2.287  (Geballe et al. 1991) that appear in several PNe in this category. A few of the spectra shown here have contributions from central star continuum flux that is larger towards shorter wavelengths, or warm dust continuum which is stronger at longer wavelengths.

### NGC 1535

NGC 1535 is classified as early round, and its near-IR spectrum is dominated by emission lines of . It has a bright ionized shell of emission which is surrounded by a fainter halo (e.g., see Schwarz, Corradi, & Melnick 1992). Near-IR images were presented in Paper I. This PN has previously been observed to have 2 lines in absorption in the far-UV (Bowers et al. 1995). Recent observations by Luhman et al. (1997) failed to detect 2 in emission in the 1 line. They attributed the earlier detection of absorption at shorter wavelengths to the interstellar medium, or a region in the PN itself 