“GO ON AND PROSPER ; THERE IS NOTHING SO 
USEFUL IN SCIENCE AS ONE OF THOSE EARTH- 
QUAKE HYPOTHESES, WHICH OBLIGE ONE TO FACE 
THE POSSIBILITY THAT THE SOLIDEST-LOOKING 
STRUCTURES MAY COLLAPSE.” 
LETTER FROM PRoF, HUXLEY To 
THE AUTHOR. JUNE z, 1889. 
