Figure F74. Depth distributions of total bacterial populations (solid symbols) and dividing and divided cells (open symbols) in sediment samples from Holes 1109B (triangles), 1109C (circles), and 1109D (squares). The solid curve represents a general regression line of bacterial numbers vs. depth in deep-sea sediments (Parkes et al., 1994), with 95% upper and lower prediction limits shown by dashed curves.