A photometric survey of compact and selected planetary nebulae.

Absolute and relative line fluxes are given for 31 planetaries, including several that have not been heretofore examined. Most are compact, and some have extraordinarily high reddening constants. Principal results include revision of some previously measured H-beta fluxes, the discovery of two very high excitation nebulae, examination of three very low excitation objects, and the discovery of at least one and possibly more nebulae with high N/O, including one (NGC 6537) that appears to be highly enriched in both nitrogen and helium.