Abstract
We show that the apparent correlations between the length of the globular cluster horizontal branch and cluster luminosity and density [Fusi Pecci et al. AJ, 105, 1145 (1993)] may be affected by observational bias. This bias results from the fact that one can trace horizontal branches over greater lengths in rich clusters than in poor ones. The existence of a correlation between the length of the horizontal branch and the cluster central density is confirmed at about the 2σ level of confidence. The strength of an apparent correlation between cluster luminosity M v and the length of the horizontal branch is found to depend critically on the choice of sample used to analyze the data
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