Reviews^  etc. 
f  Am.  Jour.  Pharm. 
\      Nov.,  1880. 
which  altogether  164  kinds  were  described.  So  effectual  has  been  the  research  in 
this  direction  that  the  author  has  now  been  able  to  describe  254  pseudoniorphs  by 
transformation  and  182  such  by  displacement.  The  study  of  these  products  is  of 
particular  interest  and  importance  in  the  researches  on  the  changes  which  have  taken 
place  and  are  continually  occurring  in  the  rocks  of  our  globe,  and  the  work  before 
us  is  perhaps  the  most  efficient  aid  in  such  researches,  since  it  contains  all  the  obser- 
vations on  this  subject  which  were  known  at  the  time  of  publication. 
On  the  De-uelopment  of  Lemna  minor.    By  Wm.  Barbeck. 
From  the  Proceedings  of  the  Academy  of  Natural  Sciences  of  Philadelphia, 
accompanied  with  a  lithographic  plate  showing  the  different  stages  of  development- 
Das  Verhalten  des  Schimmelgenus  Mucor  zu  Antisepticis  und  einigen  njernjoandten  Stof- 
fen  m'lt  hesonderer  Berucksichtigung seines  Verhaltens  in  zuckerhaltigen  FliXssigkeiten. 
Dorpat.     1880.  Pp.50. 
The  behavior  of  the  mold  genus  Mucor  to  antiseptics  and  several  allied  compounds, 
with  particular  regard  tcrits  behavior  in  saccharine  liquids. 
The  effectiveness  in  preventing  the  growth  of  mould  was  found  to  be  greatest  in 
corrosive  sublimate  and  iodine,  one  part  of  each  being  sufficient  to  protect  50,000 
parts  of  liquid.  Then  followed  chlorine,  volatile  oil  of  rriustard,  thymol  (i  in  10,- 
000),  sulphurous  acid,  bromine,  potassiuni  xanthogenate,  sodium  benzoate,  oil  of 
cinnamon,  crude  30  per  cent,  carbolic  acid  (i  in  4,000),  chlorinated  lime,  beech- 
wood  tar  creasot  (i  :  1,800),  benzoic  acid  (i  :  1,250),  carbolic  acid  and  cresylic  acid 
{1:1 ,000),  salicylic  acid  ( i  :  500),  soda,  picric  acid,  oil  of  eucalyptus  ( i  :  250),  etc. 
No  preventative  influence  was  exerted  by  potassium  permanganate  (i  :  500),  alumi- 
nium acetate,  chloral  hydrate  (1:70),,  quinia  muriate,  sodium  carbonate  (1:50), 
potassium  chlorate,  copper  sulphate,  chromic  acid  (i  15),  sodium  chloride,  potassium 
nitrate  and  glycerin,  the  last  three  in  the  proportion  of  i  14.  Neither  had  alum  any 
effect. 
Zur  Geschichte  des  Chinidins  und  Cinchonidins,  und  Normirung  der  Nomenclatur  dieser 
Chinaalkaloide  durch  den  chinologischen  Congress  in  Amsterdam  (April  13,  1877). 
By  Dr.  G.  Kerner.     Halle,  1880. 
Notes  on  the  history  of  quinidia  and  cinchonidia,  and  on  the  nomenclature  of  these 
cinchona  alkaloids  by  the  quinological  Congress  at  Amsterdam. 
The  author  defends  the  nomenclature  referred  to,  which  is  the  one  commonly 
used  in  the  United  States,  and  opposes  the  introduction  of  Hesse's  designation  cor^- 
chinia  for  quinidia.    The  pamphlet  is  a  rt-print  from  "Archiv  der  Pharmacie." 
Kritische  Beurtheilung  der  Methoden,  n.velche  zur  Trennung  und  quantitatinjen  Bestim- 
mung  der  ^ui-rschiedenen  Chinaalkaloide  benutzt  njverden.  By  Carl  Hielbig.  Dorpat, 
1880.  Pp.  86. 
Critical  examination  of  the  methods  for  the  separation  and  quantitative  determina- 
tion of  the  different  cinchona  alkaloids. 
The  author  has  carefully  examined  the  analytical  methods  proposed  by  De  Vrij, 
