A  Simple  Problem  in  Arithmetic 
According  to  an  investigation  by 
the  University  of  Illinois  on  66 
dairy  farms,  it  was  found  that  133.9 
hours  per  year  were  required  to 
milk  a  cow  by  hand.  A  De  Laval 
Milker  will  cut  this  time  in  two  and 
save  at  least  62  hours  per  cow  per 
year  over  hand  milking,  and  at  15 
cents  per  hour  a  saving  of  $9.30  per 
cow  per  year  will  be  effected,  which 
is  equal  to  6%  of  $155  for  just  one 
cow,  or  $1,550  for  ten  cows,  etc. 
This  is  a  very  conservative  way 
of  figuring  the  value  of  the  time¬ 
saving  feature  of  a  De  Laval  Milk¬ 
er.  In  actual  use  it  may  save  a 
man;  or  if  a  man  is  still  retained  it 
may  mean  that  more  cows  can  be 
kept  or  that  he  cap  devote  all  his 
time  to  other  work,  the  owner 
looking  after  the  milking  himself. 
Or  it  may  mean  that  a  boy  or  some 
other  person  not  capable  of  doing 
much  milking  by  hand,  with  the 
aid  of  a  De  Laval,  can  take  the  place 
of  a  grown  man.  There  are  many 
situations  impossible  to  foresee  that 
may  justify  the  purchase  of  a  De 
Laval  Milker,  and  which  often  do 
save  enough  in  other  ways  to  pay 
for  a  De  Laval  in  a  year. 
But  saving  time  is  only  part  of 
the  advantage  of  a  De  Laval  Milk¬ 
er.  Suppose  a  De  Laval,  because 
of  its  uniform,  vigorous  and  stimu¬ 
lating  action,  will  increase  produc¬ 
tion  10%.  Of  course  the  De  Laval 
Company  can’t  guarantee  such  an 
increase,  as  there  are  so  many  un¬ 
controllable  factors,  such  as  health, 
feed,  climate,  care,  etc.  But  practi¬ 
cally  all  De  Laval  Milker  users,  and 
The 
»'  •  -  .  . 
De  Laval  Milker 
saves  $20.30 
per  cow 
per  year 
especially  those  who  weigh  their 
milk  and  know,  do  say  they  get 
more  milk,  taking  the  herd  as  a 
whole  over  a  period  of  a  year — 
some  as  high  as  20%;  and  10%, 
based  on  the  results  obtained  by 
many  users,  seems  conservative. 
Ten  per  cent  of  5,000  pounds 
of  milk  per  year — about  the  aver¬ 
age  production  per  cow  per  year 
—  is  500  pounds,  which  at  $2.20 
per  cwt.,  the  average  price  of  fluid 
milk  in  the  United  States  delivered 
at  country  stations  during  1922, 
would  be  $11.00  per  cow  per  year. 
Then  add  this  to  the  value  of  the 
time  saved,  which  is  $9.30,  and  you 
will  have  a  total  gain  of  $20.30  per 
cow  per  year,  due  to  the  use  of  a 
De  Laval  Milker.  Multiply  this  by 
10,  20,. 30,  or  the  number  of  cows 
you  are  milking  by  hand,  and  you 
get  a  very  conservative  idea  of 
what  a  De  Laval  Milker  really  Will 
make  you  in  profit. 
In  addition,  when  it  is  considered 
that  cleaner  milk  can  be  produced, 
that  the  drudgery  and  dislike  of 
hand  milking  are  eliminated,  and 
that  dairying  is  made  more  pleas¬ 
ant  for  owner,  son  or  hired  man, 
you  have  the  answer  why  so  many 
people  are  installing  De  Laval 
Milkers — and  especially  when  it  is 
borne  in  mind  that  a  De  Laval 
Milker  can  be  bought  on  such  lib¬ 
eral  terms  and  such  long  time  that 
it  will  actually  pay  for  itself  as  it  is 
being  used.  Full  information  can 
be  obtained  from  your  De  Laval 
Agent,  or  by  writing  us  at  any  of 
the  addresses  below. 
The  De  Laval  Separator  Company 
NEW  YORK  CHICAGO  SAN  FRANCISCO 
165  Broadway  29  E.  Madison  Street  61  Beale  Street 
See  the  De  Laval  Exhibit  at  the  National  Dairy  Show,  Syracuse,  N.  Y.,  October  5-13 
