458  Tyrotoxicon  in  Ice  Cream,  Milk,  etc.  {AmsJe^"Sarm" 
That  the  poison  which  I  found  in  the  cream  was  the  same  as  that 
which  affected  the  people  can  not  be  doubted  after  comparing  the 
symptoms  produced  in  the  cat  with  those  observed  by  Dr.  Moffitt, 
and  as  has  been  stated,  the  experiment  on  the  cat  was  made  before  I 
received  the  letter  from  Dr.  Moffitt.  The  cream  was  made  on  the 
9th  of  June,  and  the  poison  separated  on  the  14th. 
I  wrote  to  Mr.  Johnson  asking  several  questions,  which  he  has 
kindly  and  fully  answered.  As  the  nature  of  the  questions  is  shown 
in  the  answers,  I  will  simply  give  the  answers : 
"  (1.)  The  milk  from  all  the  cows  was  mixed  together  in  the  making 
of  the  custard." 
"(2.)  The  custard  for  the  lemon  and  vanilla  was  all  one  custard; 
made  and  mixed  before  the  extracts  were  put  in." 
"(3.)  We  had  previously  used  the  same  brand  of  extracts  (Jen- 
ning's  best),  both  lemon  and  vanilla,  with  no  bad  results." 
"  (4.)  The  food  of  the  cows  in  the  morning  and  evening,  consists 
of  oats  and  corn,  ground  together  and  fed  dry,  with  clover  and  hay. 
I  have  never  seen  anything  suspicious  in  the  pasture  or  food.  There 
is  a  running  stream  of  water  coming  from  a  spring  in  the  pasture. 
There  is  plenty  of  shade.  At  evening  the  cows  are  driven  from  the 
pasture  and  placed  in  the  stable  or  yard,  according  to  the  season. 
The  stable  and  yard  are  open  for  inspection  at  any  time.  My  resi- 
dence is  in  the  center  of  the  village,  and  the  board  of  health  would 
not  allow  me  to  stable  and  yard  my  cows  there  if  there  were  any  bad 
odors  during  the  summer." 
"  (6.)  The  teats  are  thoroughly  washed  before  each  milking." 
After  receiving  the  above  details  concerning  the  making  of  the 
cream,  the  following  experiment  was  made : 
July  8.  To  one  quart  of  night's  milk  a  piece  of  the  solid  portion 
of  the  Lawton  cream,  about  the  size  of  a  filbert,  was  added.  This 
residue  had  been  left  in  the  filter  paper  ever  since  the  analysis  of  the 
poisonous  cream,  June  14,  and  it  was  on  June  8  that  the  first  milk 
for  the  preparation  of  the  Lawton  cream  was  collected.  This  dried 
and  hardened  lump  was  crumbled  into  the  milk,  which  was  placed  in 
a  clean  tin  pan  and  set  in  a  cool  cellar.  July  9,  to  a  quart  of  morn- 
ing's milk,  another  small  bit  of  the  infected  material  was  added,  and 
this  milk  was  also  placed  in  the  cellar.  At  1  P.  M.  both  portions  of 
milk  were  poured  into  a  clean  earthenware  jar,  and  four  fresh  eggs 
