Table of Contents: “...-dicyanobenzoquinone (DDQ); iodine; lead tetra-acetate.--v. 4. Mercurie acetate, periodic acid and periodates, sulfuryl...”

Table of Contents: “... on Mercury -- Mars at last -- Ice on the moon -- A beginner's guide to the end of the world -- STanding...”

Table of Contents: “... spectra -- Measuring astronomical distances -- A new theory of gravity -- Euclid, Gauss and Mercury...”