ANNIVERSARY  ADDRESS  OF  THE  PRESIDENT. 
65 
Vol.  49.] 
4  On  Clinochlore  and  Mica 5  and  ‘  On  Crystallized  Enclase  in  the 
Ural.’  He  contributed  papers  largely  to  Poggendorfs  Annalen, 
to  Silliman’s  Journal,  to  Leonhard  and  Bronn’s  Jahrbuch,  and  to  the 
St.  Petersburg  and  Vienna  Academies  of  Science. 
He  continued  to  vrork  to  the  very  last,  dying  at  St.  Petersburg 
on  the  2nd  January,  1893,  at  the  age  of  75,  and  the  esteem  in 
which  he  was  held  by  all  classes  was  amply  shown  at  his  funeral 
in  the  environs  of  that  city. 
OH  SOME  RECENT  WORK  OE  THE  GEOLOGICAL  SOCIETY. 
Bearing  in  mind  that  several  of  the  later  occupants  of  this  Chair 
have  selected  special  subjects  for  the  Anniversary  Address,  it  has 
occurred  to  me  that  some  notice  of  a  portion  of  the  work  brought 
before  the  Society  during  a  limited  period  might  not  be  without 
interest  to  the  Fellows.  The  Quarterly  Journal  is  a  rich  mine  to 
exploit,  and  although  some  portions  of  it  may  be  rather  stiff  reading, 
yet  there  is  a  large  amount  of  material  which  will  repay  close  atten¬ 
tion.  The  limitation  which  I  propose  in  this  case  covers  a  period  of 
about  seven  years,  during  which  time  I  have  had  the  honour  of 
serving  the  Society  in  one  official  capacity  or  another,  and  conse¬ 
quently  have  had  my  attention  specially  drawn  to  many  of  the 
papers  which  have  been  read. 
It  would  of  course  be  out  of  the  question  to  attempt  to  deal  com¬ 
prehensively  with  all  the  subjects  which  have  been  brought  before 
the  Society ;  but  as  the  Fellows  might  like  to  be  reminded  of  what 
we  have  been  doing  during  this  septennial  period,  it  will  be  con¬ 
venient  to  offer  a  rough  classification  and  enumeration  of  the 
communications  which  have  been  made.  Strict  numerical  accuracy 
is  not  attempted,  nor  is  it  claimed  that  the  classification  is  the  best 
that  could  be  devised.  My  object  is  simply  to  draw  your  attention 
to  what  has  been  going  on,  and  afterwards  to  select  some  one  or 
more  subjects  for  further  consideration.  In  so  doing  it  may  be 
necessary  briefly  to  allude  to  works  outside  the  publications  of  the 
Society. 
Certainly  one  of  the  most  popular  subjects  has  been  Pleistocene 
Geology.  Many  of  these  papers,  as  possibly  some  of  you  may 
remember,  attracted  considerable  audiences  and  were  provocative  of 
interesting  and  prolonged  discussions.  Upwards  of  thirty  papers 
have  been  read  dealing  with  the  Pleistocene  Geology  of  the  British 
