274  The  International  Exposition.  {Amjine,r'x876arm- 
E.  M.  Holmes.  That  of  Helwick  &  Co.  comes  from  a  plant  of  the 
genus  Turnera,  nat.  order  Turneracece,  allied  to  Turnera  microphylla, 
D.  C.  The  San  Francisco  damiana  appears  to  be  a  hairy  variety  of 
the  same  plant,  and  has  a  taste  recalling  that  of  confection  of  senna 
(not  sage  like,  as  stated  on  page  519  of  last  volume).  The  third  kind 
of  damiana  is  the  Aplopappus  (now  called  Haplopappus)  discoideus,  D.  C, 
the  leaves  of  which  taste  like  sage. — Pharm.  'Jour,  and  Trans. ,  1876, 
Jan.  22. 
Dr.  J.  T.  Rothrock,  of  Wilkesbarre,  Pa.,  published  a  paper  on  the 
last  mentioned  variety  of  damiana  in  the  "  Phila.  Med.  and  Surg.  Re- 
porter," March  4.  He  arrived  at  the  same  conclusion,  and  gives  the 
following  synonyms  for  the  plant :  Linosyris  mexicana,  Schlechtendal ; 
Baccharis  veneta,  Humboldt,  Bonpland  and  Kunth,  and  Bigelovia  veneta, 
Gray.  It  is  a  common  plant  in  Mexico,  and  another  closely  allied 
species,  which  by  some  is  considered  identical  with  the  preceding  Bige- 
lovia Menziesn,  Gray,  is  found  in  California  and  Arizona.  Prof.  Gray 
has  confirmed  these  conclusions. 
NOTES  ON  THE  INTERNATIONAL  EXPOSITION. 
BY  THE  EDITOR. 
The  International  Exposition  in  Philadelphia,  which  was  formally  opened  by  the 
President  of  the  United  States  on  the  tenth  of  May,  is  the  seventh  which  has 
taken  place  during  a  period  of  twenty-five  years.  The  first  one  being  inaugurated 
in  London,  it  was  followed  by  the  one  in  New  York  in  1853,  which,  although  a 
failure  in  more  than  one  respect,  nevertheless  exerted  a  powerful  influence  upon  the 
development  of  arts  and  industries  in  this  country,  and  served  likewise  to  make  the 
United  States  better  known  in  foreign  countries.  Paris  followed  in  1855,  London 
again  in  1862,  Paris  in  1867  and  Vienna  in  1873.  Several  international  exhibitions 
of  special  industries  having  in  the  meantime  been  held  in  various  other  European 
cities,  a  grand  fair  of  the  entire  industries  of  all  civilized  nations  was  undertaken  in 
commemoration  of  the  centennial  anniversary  of  the  independence  of  the  United 
States,  and  Philadelphia,  from  which  place  the  declaration  of  independence  ema- 
nated, was  selected  as  the  most  fitting  place  to  celebrate  the  one  hundredth  anniver- 
sary of  that  historical  event. 
The  ground  chosen  for  the  grand  gathering  is  in  West  Fairmount  Park.  The 
park  takes  its  name  from  that  portion  of  the  public  grounds  where  the  principal 
water-works  and  the  oldest  of  the  present  reservoirs  have  been  built,  which  are  still 
known  as  the  Fairmount  water-works  and  basins.  From  these  works  the  present 
Park  extends  in  a  northerly  and  westerly  direction,  on  both  banks  of  the  Schuylkill 
river,  following  afterwards  the  circuitous  bed  of  Wissahickon  creek,  comprising, 
altogether,  an  area  of  2,991  acres,  and  being  divided  by  the  Schuylkill  into  an  east- 
