EDITORIAL Bite 
These determinations do not rest upon the testimony of any 
single geologist or even a few geologists; they are the joint 
product of no less than twenty observers. In the light of these 
impressive phenomena, taken in connection with the exten- 
sive glaciation demonstrated in like manner in India and 
the less known phenomena of southern Africa, it is no longer 
our privilege to ignore or slight these most remarkable glacia- 
tions in our attempts to explain the origin of glacial periods. 
The’ agency assigned, it would appear, must be competent to 
explain very extensive, very prolonged and very much inter- 
rupted glaciation, at seemingly low levels, in areas that lap 
across the tropics on both the north and south sides of the 
equator. Before any hypothesis is entitled to popular propa- 
gation (except under due qualifications) it should frankly meet 
and fully satisfy these limital and most extraordinary phe- 
nomena. NEE 
