72 
Book  Reviews. 
f  Am.  Jour.  Pharm. 
\     January,  1921. 
to  the  amounts  exported  of  both  the  leaf  and  alkaloid  are  given  in 
tables.  A  careful  review  of  the  chemistry  of  the  alkaloids  of  coca 
leaves  with  special  consideration  of  that  cultivated  in  Java  is  given 
in  Chapter  3  of  this  dissertation.  The  other  constituents  of  the 
leaves  such  as  tannin  and  essential  oil  are  described. 
Chapter  4  is  devoted  to  the  methods  of  extraction  of  the  alka- 
loids and  Chapter  5  is  devoted  to  the  galenical  preparations  of  coca 
and  a  comparative  examination  of  these.  In  these  the  preparations 
official  in  the  various  pharmacopoeias  are  given. 
Chapter  6  considers  the  rational  preparations  of  extracts  of 
coca,  and  Chapter  7  the  solutions  of  cocaine  hydrochloride  and  their 
sterilization. 
The  author  considers  that  the  coca  cultivated  in  Java  is  the 
Erythroxylon  Coca  var.  Spniceanum,  while  that  of  Ceylon  is  prin- 
cipally Huanuco  and  both  these  are  varieties  of  Erythroxylon  Coca 
Lamarck. 
The  anatomical  structure  of  the  Java  leaf  is  described  and 
cross  sections,  the  upper  and  lower  surfaces  are  illustrated. 
The  fourth  part  of  this  book  is  a  thesis  on  the  methods  of 
micro-chemical  research  upon  certain  constituents  of  essential  oils, 
submitted  for  the  "Doctor"  degree  by  Rene  Baudry.  Numerous 
plates  show  the  various  types  of  crystals  obtained  in  his  investiga- 
tions and  excellently  illustrate  this  study.  The  author  has  given 
considerable  attention  to  determining  the  localization  of  essential 
oils  in  aromatic  plants  by  the  aid  of  reagents.  This  examination 
covers  a  variety  of  plants  and  parts  thereof,  such  as  leaves,  flowers, 
seeds  and  denotes  specially  the  characteristic  micro-chemical  re- 
actions obtained  with  the  anthranilate  and  the  methylanthranilate 
of  methyl. 
A  bibliographical  index  concludes  this  thesis. 
The  fifth  part,  concluding  the  publication,  is  composed  of  a 
series  of  abstracts  covering  a  variety  of  subjects,  including  stick- 
lac,  preparation  of  cat-gut  ligatures,  lixiviation,,  preparation  of 
potassium  and  sodium  soaps,  the  utilization  of  the  oleoaginous  resi- 
dues from  the  seeds  of  Meliacea  and  the  preparation  and  uses  of 
surgical  soaps. 
The  work  throughout  exhibits  a  high  class  of  research  in  phar- 
macy. 
G.  M.  B. 
