62 
PROPERTIES  OF  SULPHATE  OF  ANILINE. 
water,  soda,  lime,  and  boracic  acid,  we  arrive  at  the  formula — ■ 
(NaO,2BoO3+10HO)+2(CaO,BoO8+2Ho)+2HO. 
Borax.  Borate  of  lime.  Water. 
The  presence  of  the  other  substances  given  by  analysis  seems 
to  indicate  that  this  mineral  has  been  formerly  deposited  by 
mineral  springs ;  and  the  fact  that  the  biborate  of  soda  it  con- 
tains has  crystallized  with  10  equivalents  of  water,  shows  that 
the  temperature  of  these  springs  could  not  have  been  greater 
than-j-55°  (Centigrade).  As  it  is  imported  from  America  for 
industrial  purposes,  tinkalzite  contains  about  70  per  cent,  of 
borax,  25  per  cent,  of  borax  of  lime,  and  2J  per  cent,  of  chloride 
of  sodium.  It  forms  an  excellent  flux  for  metallurgical  purposes, 
and  has  been  employed  with  success  in  the  porcelain  manufac- 
tories of  Sevres  by  M.  Salvetat.  In  fact,  it  appears  capable 
of  effectually  replacing  borax  in  all  the  applications  of  this 
rather  expensive  salt  to  industrial  or  manufacturing  processes. 
To  extract  boracic  acid  from  tinkalzite^  a  given  quantity  of 
hydrochloric  acid  is  diluted  with  water,  and  saturated  while 
boiling  with  the  pulverized  mineral  ;  the  clear  solution  is  de- 
canted while  hot,  and  upon  cooling  the  liquid  throws  down  the 
boracic  acid  in  large  quantities. — Lond.  Pharm.  Joum.,  Oct., 
1861,  from  Technologist. 
ON  THE  PROPERTIES  OF  SULPHATE  OF  ANILINE. 
(Read  before  the  British  Association.) 
Dr.  Turnbull,  of  Liverpool,  read  a  paper  »  On  the  Proper- 
ties of  Sulphate  of  Aniline" — a  new  remedy  which  he  had  used 
with  success  in  the  treatment  of  chorea,  or  St.  Vitus's  dance. 
He  said  that  medical  men  had  not  acquired  a  knowledge  of  the 
properties  of  new  remedies  commensurate  with  the  advances 
which  had  been  made  in  other  branches  of  medicine.  The  pro- 
gress of  organic  chemistry  had  brought  to  light  many  new  bodies 
worthy  of  investigation  ;  and  there  could  be  little  doubt  that 
many  of  them  would,  if  their  properties  were  investigated,  be 
found  to  prove  remedies  of  utility.  The  artificial  alkaloids  were 
a  numerous  class,  and  from  their  resemblance  in  chemical  consti- 
tution to  the  vegetable  alkaloids,  such  as  quinine,  morphia,  &c, 
it  might  reasonably  be  expected  that  some  of  them  should  have 
