226 
Book  Reviews. 
[Am.  Jour.  Pharm. 
March,  1918. 
involucre  campanulate,  calyculate ;  bracts  of  the  involucre  linear- 
attenuate,  5  to  6  mm.  long;  ray-flowers  9  to  13,  rays  yellow;  disk- 
flowers  numerous,  about  50 ;  achenes  hispidulous. — Florida :  on 
ballast  ground,  Hunter's  Wharf,  Pensa  cola."' 
The  second,  Erechtites  argnta  DC,  is  a  pernicious  weed  in- 
digenous to  Australia  and  Xew  Zealand  which  has  recently  ap- 
peared on  the  Pacific  coast.  Alike  with  the  common  "  fireweed," 
Erechtites  Jiicracifolia,  which  has  become  widespread  throughout 
North  America,  it  is  possible  that  it  too  may  eventually  become 
widely  distributed  at  least  in  the  western  portion  of  this  country. 
The  writer  cites  the  following  characteristics  of  this  species :  "  A 
coarse  herb  :  stems  erect,  3  to  10  dm.  high,  leafy,  striate,  slightly 
fioccose-tomentulose ;  leaves  oblanceolate  to  lanceolate,  3  to  12  cm. 
long,  .5  to  2.5  cm.  broad,  pinnatelv  lobed  to  runcinate-pinnatifid, 
sharply  and  unequally  dentate,  at  first  arachnoid-tomentulose  above, 
denselv  and  more  or  less  persistently  white-tomentulose  beneath ; 
the  lowermost  leaves  narrowed  into  a  petiole ;  the  main  stem- 
leaves  sessile  and  semi-amplexicaul ;  inflorescence  a  terminal  many- 
headed  corymbose  cyme;  heads  small,  5  to  7  mm.  high;  involucre 
calyculate  and  tomentulose  at  the  base,  nearly  or  quite  glabrous 
above:  bracts  of  the  involucre  about  13,  occasionally  becoming 
dark  brown  or  almost  black  in  the  dried  state. — California :  near 
Mendocino. 
According  to  the  writer  it  is  most  probable  that  this  species 
has  been  introduced  in  connection  with  the  extensive  lumber  trade 
between  California.  Australia  and  Xew  Zealand  since  collections 
of  it  have  been  made  in  the  vicinity  of  lumber  camps. 
Heber  W.  Youngken. 
Essentials  of  Volumetric  Analysis.  An  introduction  to 
the  subject,  adapted  to  the  needs  of  Students  of  Pharmaceutical 
Chemistry.  By  Henry  W.  Schimpf,  Ph.G.,  M.D.,  Professor  of 
Analytical  Chemistry  in  the  Brooklyn  College  of  Pharmacy.  Third 
Edition,  rewritten,  xiii  -f-  366  pages,  5T4  by  8.  61  figures.  Cloth, 
$1.60  net.    John  Wiley  and  Sons,  Inc.,  Xew  York. 
In  the  preface  to  the  First  Edition  the  author  states  that  his 
"  aim  is  to  present  the  principles  of  this  interesting  and  important 
subject  in  a  form  readily  intelligible  to  students,  and  available  for 
lecture-room  and  laboratory  work/-  an  object  which  he  seems  to 
