946 
Book  Reviews. 
{Am.  Jour.  Phartn. 
December,  1920. 
chemist's  studies  and  knowledge  of  the  ultimate  atom  or  atoms  and 
their  chemical  combinations  as  chemical  molecules." 
"Gravity  being  exerted  throughout  space,  the  bulging  of  the 
earth  at  the  equator  is  what  puts  gravity's  equilibrium  out  of  equilib- 
rium during  its  rotation  in  regular  sequence  and  back  again ;  and  this 
is  what  forces  the  earth  into  an  eclipse  with  its  attendant  changes 
in  velocity  in  its  orbit  around  the  sun,  and  produces  the  tilting  of  the 
earth,  and  so  produces  the  seasons."  (The  italics,  of  course,  are  the 
reviewers.) 
The  simple  statement  of  an  accepted  scientific  fact  or  law,  with- 
out a  direct,  logical  application  of  it  to  the  problem  in  hand  is  not 
proof.  Nevertheless,  time  after  time,  the  author  does  this  and 
claims  the  mere  statement  as  proof  of  his  contentions.  In  view 
of  the  lack  of  logical  development  of  his  proof,  one  is  compelled  to 
feel  that  the  author  cannot,  with  good  conscience,  ^end  his  thesis 
with  a  Quod  erat  demonstrandum.  G.  M.  B.,  Jr. 
