474 
VARIETIES. 
vat,  placed  alongside  and  beneath  the  steeper,  and  connected  by  a  tube,  and 
fastened  with  a  valve  or  spigot.  The  liquid  is  now  churned  by  hand  or 
with  machinery,  until  it  becomes  lighter  in  color,  and  a  blue  fecula  begins 
to  make  its  appearance.  From  time  to  time  lime  water  is  thrown  into  the 
beater  during  the  "  churning."  After  the  fecula  spoken  of  distinctly  ap- 
pears, the  water  is  suffered  to  remain  about  four  hours  for  the  Indigo  to 
settle.  It  is  then  drawn  off,  the  sediment  placed  in  bags,  and  hung  up  to 
drain.  "When  drained  sufficiently,  it  is  placed  in  boxes  to  dry,  under  gentle 
pressure  ;  and  when  dried  firm,  it  is  cut  up  into  square  cakes  and  placed  in 
the  shade,  to  become  completely  dried  by  evaporation.  The  shorter  the 
steeping  and  the  less  the  beating,  the  lighter  will  be  the  color  of  the  Indigo. 
The  Indigo  plant  will  yield  two  or  three  cuttings  a  season,  and  one  hand  will 
cultivate  about  three  acres,  the  result  being  from  175  to  200  lbs.  of  the 
article.  Unlike  sugar  cane  or  corn,  the  Indigo  requires  no  expensive  ma- 
chinery. "Where  it  is  made  only  for  domestic  use,  barrels  are  used  for 
steeping  and  beating. — Florida  News. 
On  Lemon  Juice.  By  Dr.  Bence  Jones. — Experiments  on  fresh  lemon 
juice,  by  Mr.  Whytt,  of  the  College  of  Chemistry,  furnished  the  following 
results.  It  had  specific  gravity  1036-0,  1037-9,  and  1038-4 ;  and  in  two 
specimens  each  ounce  of  juice  contained  about  28-1  to  27-5  grains  of  pure 
anhydrous  citric  acid,  and  when  burnt  yielded  only  1-74  grains  of  ash  = 
3-60  grains  of  ash  in  1000  grains  of  juice.    The  ash  contained — 
In  1000  parts. 
In  1  o 
z.  of  lemon  juice. 
Potash 
443.4 
•767 
Soda 
21-6 
•038 
Lime 
76-1 
•131 
Magnesia 
33-4 
•058 
Sulphuric  acid  . 
124-7 
•215 
Chlorine 
12-3 
•022 
Carbonic  acid  . 
196.6 
•339 
Phosphoric  acid 
75-6 
•130 
Phosphate  of  iron, 
10-6 
-018 
Silica 
5-7 
'010 
1000-0 
1-724 
London  Med.  Times  and  G'az. 
On  two  New  Tcenifuge  Medicines  imported  from  Abyssinia — the  Saoria  and 
the  Tatze. — The  Saoria  {sauarjd)  is  the  ripe  and  dried  fruit  of  the  maesa 
(bacobotrys)  picta  (Hachsetter).  According  to  M.  Schimper,  it  is  found 
throughout  Abyssinia,  at  the  height  of  7000  to  9000  feet,  never  below  6000 
feet.  The  fruit  is  an  ovoid  drupe,  covered  over  two-thirds  of  its  apex  by 
the  calyx,  and  of  a  greenish  yellow  color.  The  seeds  are  turbinate,  angu- 
lar, flattened  at  the  apex,  and  covered  by  a  resinous  substance  in  ellipsoid 
