Am.  Jour.  Pharm. 
July,  1910. 
State  Control  of  Diseases. 
327 
quot  part  of  the  clear  solution  to  dryness.  Resin  and  other  alcohol 
soluble  substances,  if  present,  are  removed  previously  by  shaking 
with  this  solvent. 
REFERENCES. 
1  Hager's  Handb.  der  Pharmaz.  Praxis. 
2  Pharmaz.  Zeitung,  1908,  44,  p.  436. 
3  Ann.  Chim.  anal,  appl.,  14,  140. 
i  Compt.  vendues,  148,  570-72. 
5  Allen,  Commercial  Org.  Anal.,  vol.  4,  p.  100. 
6  Mitt.  Kgl.  Material-Pruefungsamt,  1907,  No.  3. 
7  Allen,  Commercial  Org.  Anal.,  vol.  2,  part  1,  pp.  113,  114. 
8  Ibid.,  pp.  105,  106. 
9  Ibid.,  vol.  2,  part  3,  p.  165. 
10  Ibid.,  vol.  2,  part  3,  p.  165. 
11  Ibid.,  vol.  2,  part  3,  p.  147. 
12  Prov.  Methods  U.  S.  Dep.  of  Agriculture,  Bulletin  No.  65,  p.  no. 
13  Allen,  Commercial  Org.  Anal.,  vol.  2,  part  2,  p.  145. 
THE  STATE  CONTROL  OF  CONTAGIOUS  AND 
INFECTIOUS  DISEASES.* 
By  Dr.  Samuel  G.  Dixon, 
Commissioner  of  Health  of  Pennsylvania. 
"  The  State  Control  of  Contagious  and  Infectious  Diseases," 
the  subject  on  which  you  have  requested  me  to  address  you,  em- 
braces two  ideas,  first  the  general  control  or  supervision  of  infec- 
tions in  every  part  of  the  state,  whether  civic  or  rural,  and  second 
their  special,  absolute  control  in  the  rural  districts  only. 
The  former  relates  to  incorporated  municipalities,  cities,  boroughs 
and  townships  of  the  first-class  which  are  autonomous  in  regard  to 
sanitary  administration,  the  second  to  those  quasi-municipalities 
known  as  townships,  which  includes  also  villages.  In  the  former  the 
State  assumes  no  control  unless  municipal  control  should  become 
so  imperfect  or  careless  as  to  render  the  conditions  a  menace  to 
other  populations,  in  the  latter  the  state  has  absolute  control,  organiz- 
ing the  administration,  formulating  the  regulations  and  appointing 
the  officials  and  agents.    It  will  be  understood  therefore  that  what  I 
*  A  lecture  before  the  Philadelphia  College  of  Pharmacy,  delivered  Fri- 
day, April  22,  1 910. 
