therein) and Kelly & Latter (1995) have surveyed several PNe and proto-PNe in the $\lambda = 0.5 - 1.3$  range. Dinerstein & Crawford (1998) have completed a survey of a set of PNe in the K-band, focusing on excitation of molecular hydrogen.

There are several unique aspects of the survey results presented here that were made possible by the KSPEC spectrograph (see the instrument description below). First, because of KSPEC’s high sensitivity and simultaneous sampling of the full near-infrared spectral range, we were able to obtain data on a comparatively large number of objects (41) in a short period of time. Using the relatively narrow and short slit of the spectrograph, we sampled different regions of the PNe to examine the emission throughout the nebula. In most of the other surveys described above, larger beams were used that included much or all of the object. Another aspect of the data presented here is because of the cross-dispersed design of the instrument, the entire $\lambda = 1.1 - 2.5$  range is obtained at once, eliminating the possibility of telescope pointing errors or other fluctuations affecting the relative line strengths in the spectra. Finally, the slit-viewing detector allowed precise positioning and guiding, 