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to  the  corona    When  an  insect  Tlsits  the

flower  tor  the  vmrpuw  of  obtaining  honey,  ita

CQUTse  is  obstructed  by  the  threads  of  the

corona,  and  in  its  attempts  to  disengage  itself

and  penetrate  the  nectary,  it  becomes  dusted

orer  with  pollen,  which  it  carries  to  another

flower     If  the  stigmaa  of  this  latto:  be  ready

for  Impregnation,  the  styles  are  so  bent  down-

,  wards  as  to  come  In  contact  with  the  back  of

I  the  intruding  insect,  and  to  wipe  off  the  pollen

,  from  it.    By  watching  the  movements  of  the

!  stamens  and  styles  it  may  be  seen  that  the

anthers  bend  downwards,  and  that  the  styles

I  also  vary  in  position  at  different  times,  but

'  the  latter  are  always  so  placed  that  contact

I  with  pollen  fh>m  theirown  flower  is  prevented,

I  while  the  access  of  foreign  pollen  is  facili-

1  taied,  a  eircumstanee  which  has  now  been

I  obeerred  in  many  other  cases.
The  cOTona,  it  may  also  be  noted,  is  sup-
posed by  8<mie  persons  to  be  the  seat  of  the
odorant  principle  <tf  the  flower.
I     Kany  of  the  species  have  edible  fruits ;  suoh
are  P  fUamentosa,  P.  palUda,  P.  lutea,  P.
I  mal^finrmis,  P    eoockua,  P.   laur^oUa  (the
Water  Lenoon  ot  the  W.  Indies),  P.  eAtOU,  P.
