PREFACE
,
xi
,
AUTHOR’S NOTE TO 1944 REPRINT .
,
EXCEPT
for the addition of a few recent titles to the
-
bibliography this is a straight
of
the second
edition Which was brought up to date to 1936. Owing
_
to
war
there has beei1 insufeient‘advanœ in our
knowledge to
warrant
further revision.
The
reader
should, however, bear in mind that any paragràphs
inüoducing a time factor have the year 1936 as reference
'
point and that any references to the “
war _” are to the ‘
‘
warof 1914-18.
»
'
'
,
F.S.R.
_
C.M.Y.
’