310       Recent  Literature  Relating  to  Pharmacy.    { Xmjl%l%TTm' 
tata  is  a  type ;  and  (c)  those  containing  both  eudesmin  and  aroma- 
dendrin,  of  which  E.  hemiphloia  is  characteristic.  In  the  kino  under 
consideration  the  following  constituents  make  up  the  whole  of  the 
product  : 
Tannin  and  its  derivatives  66-05 
Eudesmin  4*45 
Moisture-  16*20 
Ash   .  .„  .  .  .  .  -  072 
Debris  (or  residue),  wood,  bark,  etc   12*36 
9978 
In  connection  with  this  work,  and  in  the  same  paper  Mr.  Smith 
records  the  separation  from  some  of  the  Eucalypts  belonging 
to  the  Renantherae,  of  a  yellow  dye  allied  to  quercetin.  For  this 
substance  he  suggested  the  name  of  mystycolonin.  It  was  separated 
in  considerable  quantity  from  the  leaves  of  E.  macrorhynca.  The 
existence  of  this  substance  in  the  leaves  of  this  species  was  an- 
nounced by  J.  H.  Maiden,  in  1887,  It  bids  fair  to  become  of  com- 
mercial value  and  rival  the  well-known  yellow  dye  quercitrin. 
WEIGHT  AND  SPECIFIC  GRAVITY  OF  WHEAT  GRAINS. 
A.  Schischkin,  on  the  variations  in  the  quality  of  wheat  grains 
(Deutsch.  Landzv.  Presse,  1897,  p.  909),  has  determined  the  specific 
gravity,  absolute  weight  and  nitrogen  content  of  nineteen  samples 
of  one  variety  of  wheat  grown  under  systems  of  rotation  without 
the  application  of  fertilizers.  The  samples  represented  nineteen 
different  seasons.  It  is  shown  that  the  absolute  weight  of  wheat 
grains  varies  considerably  in  different  seasons,  but  that  the  specific 
gravity  remains  comparatively  constant.  The  nitrogen  content 
varied  from  2*205  per  cent,  in  1882  to  3-173  per  cent,  in  1 891 .  No 
connection  is  believed  to  exist  between  the  nitrogen  content  and 
the  absolute  weight.  The  samples  from  the  smaller  yields  were 
characterized  by  a  high  nitrogen  content. 
Glauber  Salts  in  the  Caspian  Sea. — Russian  chemists  have  recently  been  in- 
vestigating a  salt  deposit  found  in  the  Bay  of  Kara-Bougos,  an  inlet  of  the  Caspian 
Sea,  on  the  eastern  shore,  nearly  opposite  Baku.  The  bottom  of  the  bay  was 
found  to  be  covered  with  a  crust  of  crystallized  Glauber  salt,  in  mauy  places  1 
foot  thick.  The  waters  of  the  Caspian  Sea  are  very  salt,  and  in  the  bay  named, 
which  is  nowhere  50  feet  deep,  evaporation  goes  on  very  rapidly.  As  fuel  can 
readily  be  obtained  from  Baku,  and  transportation  by  water  can  be  used,  it  is 
proposed  to  establish  a  factory  to  make  sodium  sulphate  on  a  large  scale. — 
Engineering  and  Mining  Journal,  March  12,  1898. 
