Am.  Jour  Phann.  1 
Dec,  1879.  J 
Reviews,  etc. 
623 
REVIEWS  AND  BIBLIOGRAPHICAL  NOTICES. 
Medicinal  Plants,  being  descriptions,  with  original  figures,  of  the  principal  plants 
employed  in  medicine,  and  an  account  of  their  properties  and  uses.  By  Robert 
Bentley,  F.L.S  ,  and  Henry  Trimen,  M.B.,  F.L.S.  Philadelphia  :  Lindsay  & 
Blakiston.    Price,  per  part,  $2. 00. 
This  magnificent  work,  is  now  nearly  completed.  Parts  39  and  40,  now  before 
us,  contain  the  well  executed  plates  and  full  descriptions  of  the  following  plants : 
Aloe  spicata,  Lin.f.;  Aloe  succotrina,  Lam.;  Balsamodendron  myrrha,  Nees  ; 
Cetraria  islandica,  Ach. ;  Chondrous  crispus,  Lyngbye ;  Cinchona  calisaya,  Wed. ;  C. 
cordifolia,  Mutis ;  C.  officinalis,  Lin.;  C.  succirubra,  Pavon;  Ciaviceps  purpurea, 
Tulasne ;  Cuminum  cyminum,  Lin. ;  Fucus  vesiculosus,  Lin. ;  Gentiana  lutea,  Lin. ; 
Gracilaria  lichenoides,  Grecvillei  and  Roccella  tinctoria,  D.  C. 
The  Throat  and  the  Voice.     By  J.  Solis  Cohen,  M.D.     Philadelphia:  Lindsay  & 
Blakiston.    i6mo,  pp.  159.    Price,  cloth,  50  cents. 
The  subject  of  this,  the  fifth  of  the  series  of  American  Health  Primers,  could 
scarcely  have  been  referred  to  more  competent  hands  than  those  of  the  author,  who 
has  furnished  an  essay  which  will  be  read  with  great  interest.  In  the  first  part  of  this 
little  work  the  general  construction  of  the  throat,  the  care  it  requires,  and  the 
various  diseases  to  which  it  is  subject,  are  treated  ;  while  the  second  part  treats  of 
he  voice,  its  acoustics,  varieties,  organ,  culture,  improper  use,  gymnastics,  defects 
and  care. 
The  Mouth  and  the  Teeth.  By  J.  W.  White,  M.D.,  D.D.S.,  Editor  of  the  "  Dental 
Cosmos."  Philadelphia:  Lindsay  and  Blakiston,  1879,  i6vo.,  pp.  150.  Price, 
cloth,  50  cents. 
As  one  of  the  American  Health  Primers  this  little  volume  will  doubtless  be  duly 
appreciated  by  all  who  value  the  preservation  of  the  health  of  the  mouth,  and  more 
particularly  of  the  teeth,  of  whose  anatomy,  development  and  various  relations  the 
book  chiefly  treats.  The  chapters  treating  of  the  decay  of  the  teeth  and  its  causes, 
and  of  the  hygiene  of  the  mouth,  offer  much  sound  advice.  The  book  is  illus- 
trated with  a  number  of  instructive  wood  cuts. 
Die  Grundlehren  der  Chemie.  Fiir  den  Studirenden  kurz  dargestellt  von  Prof.  Dr. 
Alex.  Naumann.  Heidelberg  :  Carl  Winter's  Universitats-Buchhandlung, 
1879.    8vo,  pp.  226. 
Principles  of  Chemistry  for  the  use  of  Students. 
Commencing  with  the  consideration  of  the  aims  and  objects  of  chemistry  the 
work  treats  in  its  first  part  of  "  matter  and  energy  or  force,"  neither  of  which  can  be 
created  or  destroyed.  Element,  atom  and  molecule  are  philosophically  defined,  and 
the  methods  for  ascertaining  molecular  and  atomic  weights  elicited  from  the  density 
of  the  elements  and  their  compounds  while  in  the  gaseous  state,  and  from  the  specific 
