Am7uaivy,i9PoS.arm'}      Serum  Treatment  of  Hay  Fever.  335 
Compared  to  same  the  powdered  form  represents  a  decided  prog- 
ress. This  preparation  is  obtained  by  completely  drying  the  serum 
in  vacuo  at  45 0  C,  and  mixing  it  with  sterilized  sugar  of  milk;  it 
represents  a  very  fine  yellowish  and  almost  odorless  powder. 
This  should  be  snuffed  into  the  nostrils  or  blown  in  with  an  in- 
sufflator, and  can  be  dusted  upon  the  conjunctiva  with  a  camel's 
hair  brush. 
According  to  the  reports  which  have  thus  far  been  received,  the 
pollantin  in  powder  form  is  preferred  by  most  patients  on  account 
of  its  manifest  advantages.  True,  some  patients  have  stated  that 
repeated  use  of  the  powder  in  the  eyes  produces  unpleasant  irrita- 
tion of  the  conjunctiva,  and  that  consequently  they  prefer  to  use 
the  fluid  pollantin  for  the  eyes,  though  they  continue  to  give  the 
powder  the  preference  in  the  treatment  of  the  nasal  symptoms. 
In  fact,  this  plan  is  probably  the  most  appropriate  for  cases  in 
which  the  eyes  require  frequent  treatment.  On  the  other  hand, 
the  application  of  a  small  quantity  of  the  powder  once  or  twice 
daily  will  cause  no  plaint  and  afford  sufficient  protection. 
In  a  large  number  of  cases  in  which  the  treatment  was  limited 
almost  exclusively  to  the  nasal  mucous  membrane,  there  was  relief 
to  all  the  symptoms,  even  including  those  which  pertained  to  the 
eyes. 
The  somewhat  forcible  snuffing  of  the  powder  into  the  nostrils 
caused  a  disagreeable  irritation  in  some  cases,  but  this  was  remedied 
when  it  was  insufflated  with  a  powder  blower.  (The  one  mentioned 
by  Dr.  Goldstein,  of  St.  Louis,  is  a  handy  and  suitable  one.)  The 
snuffing  of  the  powder  into  the  nostrils  is  not  always  effective  in  the 
treatment  of  the  annoying  irritation  of  the  throat  and  palate,  and 
for  this  symptom  the  use  of  the  powder  blower  is  recommended. 
One  patient  was  accustomed  to  apply  the  pollantin  powder  to  her 
palate  with  her  finger,  thus  quickly  succeeding  in  relieving  the  irri- 
tation. 
The  method  of  using  the  pulverized  serum  includes  the  following 
particulars : 
(1)  A  portion  of  the  pulverized  pollantin,  as  large  as  a  lentil,  is 
dropped  into  the  little  scoop  attached  to  the  stopper  of  the  pollantin 
bottle.  The  scoop  is  then  held  under  one  of  the  nostrils,  the  other 
nostril  being  compressed  and  occluded  by  the  finger.  The  powder 
is  then  snuffed  into  the  open  nostril,  the  snuffing  being  repeated 
