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This paper is intended to preserve all that is of general interest from a more detailed account of physical properties written for the shipboard report. The measurements described here were undertaken in the hope that they would be relevant to the results of the Oblique Seismic Experiment and interest in them waned when damage to the ship made it impossible to carry out that experiment. The compressional wave velocities (VP) obtained are summarized in Figure 1. They fall comfortably within the normal range of similar laboratory measurements made on submarine lavas and show the usual approximately linear relations to density and porosity. There was no evidence of consistent anisotropy. The calculated grain densities enable these basalts to be divided into two groups and the divisions correspond with divisions based on lithology and chemistry. Because specimens for laboratory measurements must be drilled from blocks that are not cracked, and because the measurements are made with high frequency sound, it is not safe to assert that the histogram of Figure 1 necessarily represents the velocities with which seismic waves would traverse the lava pile.

Shipboard Measurements of Seismic Velocity, Density, and Porosity in DSDP Leg 46 Basalts