496  Reviews  and  Bibliographical  Notices.  {Amsi^"i889arm' 
found  both  important  and  useful  by  those  interested  in  the  history  of  phar- 
macy. 
Orthosulphobenzoic  Acid  and  some  of  its  derivatives.    By  A.  R.  L.  Dohme. 
Baltimore:  1889.   Pp.  38. 
A  dissertation  from  Johns  Hopkins  University  for  the  degree  of  doctor  of 
philosophy.  Incidental  to  the  researches  mapped  out  the  author  ascertained 
that  commercial  saccharin  is  not  a  uniform  product,  but  contains  only  from  30 
to  40  per  cent,  of  benzoic  sulphinide,  while  parasulphaminebenzoic  acid  forms 
from  50  to  60  per  cent,  of  the  commercial  article,  about  10  per  cent,  being 
various  other  derivatives. 
Histologische  und  chemische  Untersuchungen  der  gelben  und  rothen  amerikani- 
schen  und  einiger  cultivirten  Java-Chinarinden  der  Sammlung  des  Dorpater 
pharmaceutischen  Institutes.  Von  Eugen  Wilbuschewicz,  Dorpat :  1889. 
Pp.  80. 
Histological  and  chemical  investigations  of  the  yellow  and  red  cinchona  barks, 
of  American  origin  or  cultivated  in  Java,  and  contained  in  the  collection  of  the 
pharmaceutical  institute  at  Dorpat. 
A  dissertation  from  the  University  of  Dorpat  for  the  degree  of  master  of 
pharmacy.  The  aim  of  the  histological  examination  was  to  ascertain  the  botan- 
ical origin  of  the  numerous  samples  of  cinchona  bark,  mostly  received  under 
commercial  names.   Twenty-one  of  the  barks  were  also  chemically  examined. 
Ueberdie  E'mwirkung  von  Saurechloriden  auf  Phenolaether.   II.  Zur  Kentniss  des 
Bors.    Von  Henry  C.  C.  Maisch.    Gottingen,  1889,  pp.  42. 
On  the  action  of  aci-chlorides  upon  phenol-ethers.  II.  Contribution  to  the 
knowledge  of  boron. 
A  dissertation  from  the  university  of  Gottingen  for  the  degree  of  doctor  of 
philosophy.  The  first  part  treats  upon  the  effect  of  acetyl -chloride  and  ben- 
zoyl-chloride  upon  anisol,  phenetol  and  analogous  compounds.  The  second 
part  contains  researches  on  the  advantageous  preparation  of  boron  and  its 
chloride. 
A  Manual  of  Chemistry  for  the  use  of  medical  students.  By  Brandreth  Symonds, 
A.  M.,  M.  D.,  etc.  Philadelphia:  11.  Blakiston,  Son  &  Co.,  1889,  pp.  154. 
Price  $2.00. 
The  author  having,  for  several  years,  prepared  students  in  this  branch,  both 
for  their  degrees  and  for  entrance  into  the  government  medical  services,  states 
that  the  book  is  not  designed  to  be  a  medical  chemistry.  It  is  a  brief  reca- 
pitulation of  the  most  important  chemical  facts,  particularly  of  those  applying 
to  medicine  and  hygiene;  hence  water,  air,  urine,  etc.,  receive  special  attention. 
If  properly  used,  merely  as  a  remembrancer,  the  little  work  will  serve  quite  a 
useful  purpose. 
