Although not strictly in the order of the title, we may describe of first a specimen from the so-called “melaphyre,” which forms a great sheet high up in the group through which the diamondbearing pipes have been driven. This, which bears the label “No. 5, Melaphyre,” is nearly 5″ in length. Macroscopically, it may be described as a compact dark basalt, showing slight signs of decomposition, and containing rather sparse amygdales of irregular size and shape (the maximum length being about half an inch), filled mostly with calcite and spotted occasionally with dark-green.