556 
Reviews. 
f  Am.  Jour.  Pharm. 
\  November,  1900 
The  author  gives  the  characteristics  in  powders  that  are  fine  (Sieve 
No.  VI),  middle  fine  (Sieve  No.  V)  and  coarse  (Sieve  No.  IV).  The 
treatment  of  each  drug  is  of  the  more  abundant  tissues,  the  seldomer 
occurring  tissues  and  the  diagnostic  and  important  cells  with  their 
contents,  and,  finally,  the  preparation  of  the  powder  for  examination. 
Numerous  accurate  plate  illustrations  accompany  the  work  and 
serve  to  make  it  a  valuable  contribution  to  scientific  and  practical 
pharmacognosy. 
Collections  for  an  Essay  Towards  a  Materia  Medica  of  • 
the  United  States.    By  Benjamin  Smith  Barton.  Philadelphia, 
1798  and  1804.  With  biography  and  portrait. 
The  Lloyd  Brothers  have  been  for  some  time  considering  the 
advisability  of  utilizing  a  number  of  the  rare  works  on  the  shelves  of 
the  Lloyd  Library  of  Pharmacy  and  Botany,  in  a  manner  that  will 
conserve  the  interests  of  scientific  societies  and  libraries.  The  plan 
adopted  by  them  is  to  publish,  in  as  nearly  facsimile  as  possible,  the 
rarest  of  the  early  works  connected  with  pharmacy,  materia  medica 
and  botany,  and  to  supply  them  by  exchange  to  journals  and  socie- 
ties connected  with  these  branches  of  science,  and  also  at  the  nomi- 
nal price  of  $1.00  per  issue  to  persons  who  desire  them  for  their 
private  libraries. 
The  first  of  this  reproduction  series  is  work  by  Benjamin  Smith 
Barton,  which  is  recognized  as  the  first  English  attempt  at  a  materia 
medica  of  American  plants.  In  this  reproduction  the  Lloyd 
Brothers  have  also  added  as  an  introduction  an  excellent  portrait 
and  a  biography  of  this  author.  This  is  an  unusual  opportunity  for 
libraries  and  others  to  obtain  fac-similes  of  these  old  but  invaluable 
historical  reference  books  at  a  price  that  is  unusually  reasonable. 
The  members  of  scientific  societies  and  libraries  and  scientists  gen- 
erally will  appreciate  the  thoughtfulness  upon  the  part  of  the  Lloyd 
Brothers  and  will  look  forward  to  the  reproduction  of  Peter  Smith's 
Dispensatory,  only  one  copy  of  which  is  known  to  exist,  which  is 
promised  in  the  second  bulletin. 
The  Art  of  Dispensing.  A  Treatise  on  the  Methods  and  Pro- 
cesses Involved  in  Compounding  Medical  Prescriptions.  Sixth 
edition,  revised  and  enlarged  by  Peter  MacEwan.  Published  at 
the  offices  of  the  Chemist  and  Druggist,  42  Cannon  Street,  London, 
E.  C.  1900. 
