is  a  question,  however,  which  the  pen-keepers  can  best  settle 
among  themselves,  and  one  also  which  has  been  brought  forward 
recently  by  the  Government  and  the  Agricultural  Society,  through 
the  generous  offer  of  Messrs.  Cooper  and  Nephews  to  supply  the 
apparatus  free  of  cost  to  the  Island. 
Cattle  Washes  and  Dips* 
Williams,  in  his  official  report,t  recommended  as  the  cheapest 
and  most  reliable  dressing  for  cattle  ticks :  ‘  One  pint  of 
tar  to  three  pints  of  boiled  linseed  oil,  to  be  applied  to 
all  parts  of  the  tick-infested  skin,’  and  added  that  ‘  if  one  dressing 
be  not  sufficient  a  second  should  be  applied  in  a  few  days.’ 
This  formula,  with  various  complicated  modifications,  has  been  m 
more  or  less  general  use  for  the  last  thirteen  years.  That  this 
mixture  or  a  modification  of  it  is  effective  as  a  local  a-pplicaiiou 
cannot  be  denied,  but  it  is  much  too  drastic  in  its  effect  upon  cattle 
to  be  of  any  real  service  in  the  treatment  of  tick-infested  animals. 
There  are  also  numerous  other  forms  of  washes  in  use,  many  of 
them  prepared  from  materials  which  the  settler  may  have  at  hand, 
but  these,  for  the  most  part,  are  altogether  too  complicated  and,  in 
many  instances,  also  too  costly  to  be  applied  on  a  large  scale. 
Several  proprietary  washes  and  dips  are  also  used ;  and  in  many 
instances  with  satisfactory  results.  In  the  series  of  experiments 
which  were  conducted  by  us  at  the  Government  Laboratory  some  of 
the  more  popular  of  these  were  tested,  by  spraying  a  number  of  tick- 
infested  cattle.  The  results  obtained  gave  a  percentage  of  dead  ticks 
varying  from  5  per  cent,  to  65  per  cent. 
After  prolonged  experiments  a  most  effective  spraying  wash  has 
been  evolved,  consisting  of  a  mixture  of  Cooper’s  '  Dip  powder  ’  and 
Cousin’s  '  Paranaph.’*  The  former  is  a  most  effective  preparation 
*  This  portion  of  the  Report  is  contributed  in  part  by  the  Honourable  H.  H.  Cousins, 
^I.A.,  F.C.S.,  Director  of  Agriculture,  Jamaica,  and  his  assistant,  Mr.  E.  J.  Wortlev, 
F.C.S. 
t  Loc.  cit. 
t  The  formula  of  this  preparation  is  as  follows  : 
1.  Soft  Soap  (Chiswick  Imperial)  55-6  %. 
2.  Water  . 21-7  %. 
3.  Naphthaline  ..  ..  ..  5'2  %. 
4.  Paraffin  . H'S  %• 
