In preface, line 11, for antediluvians read postdiluvians.
On page 11, line 16, for 35 miles long etc., read 27 miles long and 9
miles through the centre; and the hanging garden in a similar form and
geometrical proportions, 3 miles long and 1 mile through the centre.
On page 16, line 20, for is read and.
There are few minor mistakes which the reader can readily correct.