The scheme currently used in East Africa for Pleistocene stratigraphic correlation is bases on climate. This basis is thought to be undesirable because it consists of second-order concepts rather than of primary, objective units and because its unconventional character inhibits correlation between East Africa and other regions. Furthermore the conceptual sequence of pluvial and interpluvial Pleistocene climates is not fully supported by the field evidence described thus far. Local support exists for the Gamblian and post-Gamblian and post-Gamblian wet climates, and at one locality a wet phase of pre-Gamblian age is admissible. The other units of the current scheme require factual support before they can be accepted. It is suggested that a more conventional basis of Pleistocene correlation in East Africa is desirable.

On the eastern side of the Mount Lofty Ranges of South Australia, impure marbles and calc-silicate rocks characterized by assemblages rich in scapolite and pyroxene have been formed on a regional scale by high grade metamorphism of limestones and calcareous shales. It is suggested that this metamorphism is essentially iso-chemical and that even chlorine in the scapolite (Me 55[60) could have been derived from the original sediments.

A secondary paragenesis consisting of epidote, actinolite, and calcite at Tungkillo and epidote, actinolite, calcite, and garnet at Milendella, is the result of late metasomatism and reaction associated with the formation of granites, migmatites, and veined gneisses. At Tungkillo, outside the sphere of granite activity, the secondary, retrograde assemblage is due to limited metasomatism chiefly involving the introduction of water, whereas at Milendella where marbles and calc-silicate rocks are intimately associated with granitic rocks, reaction and metasomatism giving rise to the secondary minerals has been more intense. Here garnet of the andradite-grossularite series has developed.

The basis for Mr. Hallam' rejection of the hypothesis on the evolution of Liostrea into Gryphaea is briefly examined and is shown to be inadequate. For Liostrea real evidence is lacking. For Gryphaea the evidence, though copious, is unsound for it is based upon an improper treatement of his collections. Moreover, the features he measures are not sufficiently significant and the reader is left in considerable doubt as to the actual range of his measurements. His aspersion upon previous workers in this field is entirely unjustified.

The holotype of the stromatoporoid Milleporella sardoa Deninger, 1906, from the Senonian of Sardinia is redescribed and the genus Milleporella Deninger, 1906, and the family Milleporel-lidae Yabe and Sugiyama, 1935, are redefined. A new superfamily the MILLEPORELLICAE, is founded.