Am.  Jour.  Pharm. ) 
January,  1914.  / 
Ehrlich's  Chemotherapy. 
25 
that  the  careful  dusting  of  the  books  and  an  abundance  of  fresh  air 
and  proper  ventilation  in  a  library  is  all  that  need  be  done  under 
ordinary  conditions." 
He  here  touches  the  remedy,  cleanliness,  in  relation  to  the  books, 
but  the  same  care  that  should  be  given  to  keeping  the  books  clean 
should  also  be  insisted  upon  for  the  employees  and  readers  of  libraries 
and  all  places  where  dust  may  accumulate. 
A  visit  to  almost  any  library  will  generally  show,  by  placing  the 
hands  in  back  of  the  books  upon  the  shelves,  that  there  is  a  great  deal 
of  dust  lying  there.  Very  few  libraries,  even  those  recently  erected, 
have  had  the  vacuum  system,  which  seems  to  be  almost  perfected, 
installed.  Instead  of  making  the  reader  wash  his  or  her  hands  before 
using  a  book,  it  is  very  difficult  for  one  to  obtain  access  to  the  lava- 
tory to  wash  his  hands  even  if  he  so  desires.  In  fact,  there  are  some 
libraries  which  have  no  lavatories  at  all  for  the  public. 
Books  are  often  placed  on  shelves  in  stacks,  poorly  ventilated  and 
lighted.  The  results  obtained  in  the  library  at  Hawaii,  whose  books 
were  constantly  being  destroyed  by  insects  while  stored  in  a  dark, 
badly  ventilated  building,  but  was  almost  eliminated  when  transferred 
to  a  well-lighted  and  ventilated  building,  prove  the  value  of  pure  air 
and  sunlight.  Not  disinfectant  plants,  but  sunlight,  fresh  air,  the 
elimination  of  dust,  and  the  proper  cleanliness  on  the  part  of  the 
employees  and  readers,  is  the  way,  not  only  to  prevent  books  from 
becoming  fomites,  but  also  the  people  becoming  carriers  in  this  age 
of  prevention. 
EHRLICH'S  CHEMOTHERAPY.1 
How  His  Logical,  Systematic  Campaign  Against  Certain 
Diseases  Has  Demonstrated  the  Value  of  Scientific 
Methods  in  Therapeutical  Problems. 
By  Henry  P.  Talbot. 
Chemotherapy  has  been  called  "  a  new  science.''  It  should, 
rather,  be  regarded  as  the  designation  of  a  scientific  field  in  which 
therapeutics  and  chemistry  intermingle  in  the  solution  of  problems 
involving  the  principles  of  both  of  the  older  sciences,  much  as  do 
physics  and  chemistry  in  so-called  "  physical  chemistry/'  which  is 
not,  on  that  account,  regarded  as  a  "  new  "  science. 
1  Reprinted  from  Science  Conspectus,  March,  1913. 
