62 
Use  of  the  Rubber  Nipple. 
f  Am.  Jour.  Pharm. 
t      Feb.,  1881. 
THE  USE  OF  THE  RUBBER  NIPPLE  IN  PHARMACAL 
AND  CHEMICAL  MANIPULATIONS. 
By  Henry  Biroth. 
The  Maw's  or  small  nipple  is  in  use  for  making  pipettes  or  medicine 
dropperS;,  and  nearly  every  pharmacist  is  familiar  with  them  ;  Fig.  1 
being  a  representation  of  such  an  instrument.    But  the  larger  nipple 
can  be  advantageously  used  for  the  same  purpose,  as  described  further 
on,  under  No.  9,  as 
well  as  for  a  number 
of  other  purposes, 
viz.: 
1.  As  a  supposi- 
tory mould.  Punch 
a  dozen  holes,  large 
enough  to  hang  the 
nipples  in,  into  the 
cover  of  a  tin  seid- 
litz  powder  box,  as 
in  Parrish's  mould. 
Dust  the  inner  side 
of  the  nipple  with  lycopodium,  and  do  not  mind  the  perforation  at  its 
top,  the  melted  cacao  butter  not  passing  through.  With  some  experi- 
ence you  can  make  as  nice  a  suppository  as  Avith  high-priced  machines. 
2.  For  making  rubber  corks.  Moisten  a  common  cork  of  any  con- 
venient size,  slip  the  nipple  tightly  over  it,  trim  off  the  rim  if  neces- 
sary, and  the  cork  is  ready.  It  is  useful  in  many  cases,  as,  for  instance, 
for  syrup  or  mucilage  bottles.  Such  a  stopper  can  be  readily  cleaned, 
and  as  it  does  not  stick  to  the  bottle  it  consequently  is  not  so  liable  to 
break. 
3.  As  a  funnel.  Insert  a  small  and  short  glass  tube  in  the  top 
hole  of  the  nipple,  as  in  Fig.  3.  By  flanging  one  end  of  the  tube  it  is 
prevented  from  slipping  through.  This  can  easily  be  done  by  soften- 
ing the  end  over  a  S23irit  lamp  and  flanging  it  with  the  blade  of  a 
pocket  knife.  Fig.  6.  In  the  same  manner  a  funnel  tube,  Fig.  4,  and 
a  safety  tube.  Fig.  5,  can  be  constructed. 
4.  In  place  of  peyf orated  corks.  A  test  tube,  a  Florence  flask,  or 
retort,  or  Liebig's  cooler,  may  be  connected  with  smaller  glass  tubes 
by  drawing  the  ni25ple  over  the  mouth  and  inserting  the  smaller  glass 
