Am.  Jour.  Pliarm.  } 
Nov.,  1885,  j 
Varieties. 
587 
5.  Give  a  short  process  for  the 
is  used  for  the  manufacture  of 
2.  Give  its  source.    3.  By  what 
alkaloids  which  the  bark  should  contain 
assay  of  the  bark.  6.  What  other  bark 
quinia? 
No.  3.  Jalapa. — 1.  Describe  the  drug, 
means  can  a  good  article  be  determined  ? 
No.  4.  Aloe. — 1.  What  varieties  are  found  in  the  market?  2.  How  can 
an  adulteration  with  resin  be  detected? 
No.  5.  Ergota. — 1.  Describe  the  characteristics  of  good  ergot. 
No.  6.  AsAFCETiDA.— 1.  Whence  is  it  obtained  ?  2.  Name  its  chief  con- 
stituent. 3.  Describe  its  physical  properties.  4.  What  are  its  chief  adul- 
terations?  5.  What  percentage  should  be  soluble  in  alcohol? 
No.  7.  ScAMMONiuM. — 1.  Give  a  description  of  the  drug.  2.  On  what 
constituent  does  its  medical  property  depend  ?  3.  Give  a  test  for  the  purity 
of  this  constituent.    4.  What  are  its  most  common  adultenitions  ? 
No.  8.  AciDUM  CiTEicuM.— 1.  What  is  the  source  of  commercial  supply  ? 
2.  Describe  its  physical  properties.  3.  What  impurities  is  it  likely  to  con- 
tain ?   4.  Give  the  tests  for  its  purity. 
No.  9.  Cream  of  Tartar. — 1.  How  is  cream  of  tartar  obtained?  2. 
What  acid  does  it  contain  ?  3.  What  are  the  usual  impurities  ?  4.  Give 
tests  for  its  purity.    5.  What  is  its  officinal  title  ? 
No.  10.  Sulphur.— 1.  Whence  is  it  chiefly  obtained?  2.  In  what  three 
forms  is  sulphur  officinal?  3.  What  adulteration  is  precipitated  sulphur 
likely  to  contain  ?   4.  How  may  that  adulteration  be  detected? 
Specimens. — Give  the  name  of  each  specimen  submitted,  and  state  any 
adulteration  you  may  recognize. 
No.  1.  Colombo  root,  mixed  with 
bryonia. 
No.  2.  Cream  of  tartar,  in  crystals. 
No.  3.  Senna,  Tinnevelly. 
No.  4.  Senna,  Mecca,  witii  stems 
and  pods. 
No.  5.  Senna,  East  India. 
No.  6.  Uva  ursi. 
No.  7.  Buchu,  short  leaf. 
No.   8.  Buchu,  long  leaf. 
No.   9.  Borax,  in  crystals. 
No.  10.  Carbonate  of  soda  (sal  soda). 
No.  11.  Aconite  root,  mixed  with 
black  snake  root. 
No.  12.  Arnica  flowers. 
No.  13.  Pimenta. 
No.  14.  Cubebs. 
No.  15.  Black  pepper. 
VARIETIES. 
Acid  Trichloracetic,  a  new  Antiseptic. — Irichlor acetic  acid  {QC\^ 
CO2H),  according  to  Dr.  Filippowitch,  is  a  i>owerful  antiseptic  even  in  0"2 
per  cent,  solutions,  while  in  1  per  cent,  or  2  per  cent,  solutions  it  destroys 
all  forms  of  organic  life  ;  in  5  per  cent,  it  does  not  arrest  the  growth  of 
yeast,  but  does  that  of  bacteria  and  micrococci.  In  comparing  its  antisep- 
tic power  with  that  of  other  well-known  agents,  the  author  obtained  the 
following  scale  of  decreasing  intensity  ;  Corrosive  sublimate,  carbolic  acid, 
trichloracetic  acid,  chloride  of  zinc,  borax,  and  permanganate  of  potas- 
sium. Trichloracetic  acid  is  a  crystalline  body,  readily  soluble  in  w^ater 
and  alcohol,  and  of  an  agreeable  odor.     It  coagulates  albumen,  and  its. 
