14. ANNALS OF THE QUEENSLAND MUSEUM. 
the trails were laid dry, and indurated sufficiently to enable them to 
withstand the gentle impact of the next mud- charged tide, which 
covered them up and hid them away till they were revealed to our 
senses. If the tale told by this bit of erstwhile mud should appear 
true to nature, that other truth that the selfsame agents, physical 
and organic, which do their part in regulating the world we know 
were actively at work in the incalculable past, will have received one 
more illustration. 
