Am.. Jour.  Pnarn.."' 
June.  1S96.  J 
Reviews. 
315 
Trochiscus  Potassii  Chloratis. — Each  contains  3  grains  of  potassium  chlorate. 
Trochiscus  Sodii  Bicarbonatis. — Each  contains  3  grains  of  sodium  bicarbonate. 
Unguentum  Acidi  Carbolici. — Each  100  grammes  contains  nearly  4  grammes  of 
phenol. 
Unguentum  Acidi  Salicylici. — Each  100  grammes  contains  2  grammes  of 
salicylic  acid. 
Unguentum  Aconitinae. — Each  100  grammes  contains  2  grammes  of  aconitine. 
Unguentum  Atropinae. — Each  100  grammes  contains  2  grammes  of  atropine. 
Unguentum  Belladonnas. — Each  100  grammes  contains  c*6  gramme  of  the  alka- 
loids of  belladonna  root. 
Unguentum  Cantharidis. — 10  grammes  of  cantharides  per  100  grammes  of 
ointment. 
Unguentum  Creosoti. — Each  100  grammes  contains  10  c.c.  creosote. 
Unguentum  Gallae  cum  Opio. — Each  100  grammes  contains  7 -5  grammes  opium 
in  very  fine  powder. 
Unguentum  Hydrargyri  Compositum.— Each  100  grammes  contains  do  grammes 
Unguentum  Hydrargyri. 
Unguentum  Hydrargyri  Xitratis  Dilutum. — Each  ioo  grammes  contains  20 
grammes  Unguentum  Hydrargvri  Xitratis. 
Unguentum  Hydrargyri  Oxidi  Rubri. — Each  ice  grammes  contains  10  grammes 
of  red  mercuric  oxide. 
Unguentum  Sulphuris  Iodidi. — Each  100  grammes  contains  4  grammes  of 
sulphur  iodide. 
Unguentum  Veratrinse. — Each  100  grammes  contains  2  grammes  of  veratrine. 
Semi- Annual  Report  of  Schimmel  >Sc  Co. — Leipzig  and  New  York.  April, 
1898. 
This  report  is  somewhat  briefer  than  customary,  owing  to  the  fact  that  fewer 
scientific  researches  have  been  accomplished  in  the  examination  of  ethereal 
oils,  during  the  last  six  months  than  usually.  The  Report  adds,  that  ' '  it  would, 
however,  be  a  mistaken  inference  to  conclude  that  the  realm  of  knowledge  has 
rjeen  so  far  advanced  as  to  admit  a  pause  in  the  work  of  further  research. 
On  the  contrary,  many  and  important  problems  still  remain  to  be  solved,  but 
it  should  be  borne  in  mind  that  with  the  extended  and  deeper  insight  into  the 
constitution  of  so  highly  complex  organic  compounds,  the  difficulties  of  fur  titer 
and  accurate  research,  and  of  correct  interpretation  accumulate  and  sometimes 
necessitate  a  discriminating  retrospect  upon  disjointed  or  unclassified  scientific 
■material."  Among  !i  novelties  "  mention  is  made  of  two  specimens  of  new 
essential  oils  from  Java.  One  being  an  oil  from  the  fresh  herb  of  Ageratum 
conyzoides,  which  seems  to  contain  a  compound  of  the  sesquiterpene  series. 
The  other  is  from  the  fresh  leaves  of  Ccssalpinia  Sappa?i,  L.,  the  tree  furnish- 
ing Sips.n  wood.  The  odor  o:  the  oil  is  pepper-like,  and  dextrogyre-phellan- 
drene  seems  to  be  the  principal  constituent. 
Hatch  Experiment  Station  of  the  Massachusetts  Agricultural 
College.    Bulletins  Xos.  52  and  53.   March  and  April.  1898.    Amherst.  Mass. 
These  bulletins  contain  information  on  concentrated  feed-stuffs  ;  spraying  for 
the  destruction  of  insects  and  fungous  growths  ;  and  variety  tests  for  fruits. 
United  States  Department  of  Agriculture,  Division  of  Botany. 
Circular  No.  14,  1S9S,  pp.  7.  This  is  a  pamphlet  by  Lyster  H.  Dewey,  assistant 
of  the  Division  of  Botany,  upon  Dodder's  Infesting  Clover  and  Alfalfa. 
