(1991) sample. One way that our smaller differential reddening result might be understood is if BALQSOs with larger balnicity indices are more heavily reddened; a larger sample is needed to determine if this is actually the case.

Emission and Absorption Properties \[sec:emline\]
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In addition to investigating the differences in the continua and colors of BALQSOs, it is also important to examine the differences and similarities in their emission lines. In particular, if BALQSOs and nonBALQSOs are drawn from the same parent population, they are likely to have similar emission-line properties ([Weymann]{} [et al.]{} 1991). Thus, we now revisit Figures \[fig:fig3\]–\[fig:fig5\] with emission lines instead of continua in mind. At the same time we will also comment on significant differences in the absorption line properties of the different BALQSO samples.

We begin the emission-line analysis by examining the emission-line region near . In each panel of Figure \[fig:fig3\] the emission lines are similar for HiBALs and nonBALs, except that there appears to be a slight dearth of emission in HiBALs just redward of the expected line peak (as evidenced by negative flux in the HiBAL minus nonBAL difference spectrum). This result holds true as well for the LoBAL composite in 