JUICE  OF  SOLANUM  LYCOPERSICUM.  515 
stated  to  weigh  455-6944  grains.  This  result  appears  to  be 
derived  from  Sir  G.  Shuckburg's  experiments,  which  give  the 
cubic  inch  of  water  at  60°  F.  as  252-506  grains ;  the  flaidounce, 
therefore  would  equal  i^,  or  455-6944  grains. 
In  a  report  to  the  British  House  of  Commons  in  1821,  (see 
Penny  Cyclopedia,  art.  Standard,)  the  cubic  inch  of  water  at 
62°  F.  is  declared  to  weigh  in  vacuo  252-72  grains  of  the  stand- 
ard pound  of  1758,*  while  in  a  final  report  made  1835,  adopted 
and  at  present  in  force,  the  cubic  inch  of  water  at  62°  F. 
weighed  in  the  air,  with  brass  weights,  bar.  30  inches,  equals 
252-458  grs.  or  the  fluidounce  455-6094  grains.  This  latter 
weight  reduced  to  the  temp,  of  60°  F.  by  Kopp's  table  as  above, 
would  equal  455-6910  grains.  Reduced  by  other  tables  the 
result  would  vary  slightly. 
The  question  is  thus  seen  to  be  not  susceptible  of  a  definite 
answer,  and  although  the  true  result  may  be  classed  among  the 
constants  of  the  mathematician,  yet  obstacles  to  its  rigid  deter- 
mination will  ever  remain  insuperable. 
By  comparing  the  results  as  above  given,  we 
find  at  the  temp,  of  60°  F.  and  Bar.  30  in. 
the  United  States  standard  fluid  ounce  455-6216  grains. 
Sir  G.  Shuckburg         ....        455-6944  « 
British  standard   455-6910  « 
Average  weight  (mean  of  the  above,)  455-6690  « 
ON  THE  JUICE  OP  THE  FRUIT  OF  SOLANUM  LYCOPERSICUM 
(TOMATO.) 
By  Jno.  Baft.  Enz. 
The  fruit  of  the  Solanum  lycopersicum,  cultivated  in  the  gar- 
dens at  the  foot  of  the  Donnersberg,  and  which  in  its  fresh  ripe 
condition  is  of  a  beautiful  scarlet  red  color,  was  collected, 
bruised  in  a  stone  mortar  with  a  wooden  pestle,  and  placed  in 
*As  an  historic  fact  it  may  be  mentioned,  that  the  great  fire  which  de- 
stroyed the  British  Houses  of  Parliament  in  1834,  also  destroyed  the 
standard  weights  alluded  to  in  the  act.  As  this  loss  has  never  been  re- 
placed,- there  is  consequently  no  legal  standard  at  present  in  Great  Britain, 
