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Published Ha/Hß ratios and infrared to visual flux ratios are examined as potential diagnostics for dust in Seyfert 1 galaxies, Seyfert 2 galaxies, and QSOs. Ha/Hß ratio distributions are very broad although some subtle distinctions may be evident among the various classes of objects. The distributions of the ratio of X ~ 10-|xm luminosity to that at visual-ultraviolet wavelengths are more narrow, and clear distinctions are evident among the various types of object. Clearly both Ha/Hß anddoi:10.1086/132490 fatcat:tfiqfj3hizgqteyxsiqtlrhcxi