AFebi°uarr^i898m'}      Analysis  of  the  Gastric  Contents.  103 
The  Uffleman  test  was  obtained  in  the  ethereal  extract  of  the 
contents  (Uffleman-Penzolt  test)75  in  two  cases,  both  of  which  had 
given  the  test  in  the  crude  filtrate.  The  De  Jong  test  was  obtained 
in  no  case.  This  would  indicate  that  there  were  present  in  the  con- 
tents in  eight  cases  substances  not  lactic  acid,  which,  to  some  extent, 
simulated  the  test  for  this  substance  in  the  filtrate.  In  two  cases 
only  were  these  substances  soluble  in  ether. 
Butyric  acid;  present  in  no  case  (15  cases). 
Acetic  acid;  present  in  no  case  (15  cases). 
Proteids  ;  native  proteids;  present  in  slight  trace  in  46  cases. 
Acid  albumin ;  present  in  all  cases  in  filtrate. 
Albumoses  or  peptones  (Biuret  reaction) ;  present  in  all  cases. 
Carbohydrate  ;  starch  present  in  six  cases  in  filtrate  ;  erethro- 
dextrin  present  in  15  cases;  dextrin  present  in  27  cases. 
QUANTITATIVE  ESTIMATIONS. 
MIXED  CONTENTS. 
Mean.  Max.  Min. 
per  Mille.  per  Mille.  per  Mille. 
Grammes.  Grammes.  Grammes. 
Total  acidity  of  mixed  contents  2.18  3*00  1*50 
Total  hydrochloric  acid  i-66  2-48  1*15 
Total  free  hydrochloric  acid76  I"I2  rgo  0-09 
Total  combined  hydrochloric  acid76  ■  .  .  .  .0*57  1*49  0*24 
Total  organic  acids  and  acid  salts  ......  0*59  of88  0*20 
Total  organic  acids  (15  cases)   0*45  o*6i  0*15 
Total  acid  salts  (15  cases)  0-14  0*27  o'o8 
EIIyTRATE. 
Total  acidity  of  filtrate   2*04 
Total  hydrochloric  acid  i'48 
Total  free  hydrochloric  acid  1*07 
Total  combined  hydrochloric  acid  0*41 
Total  organic  acids  and  acid  salts  0*56 
A  comparison  of  the  quantitative  results  of  the  mixed  contents 
and  the  filtrates  shows,  as  you  see,  a  lower  average  total  acidity  in 
75  Deutsches  Archiv.f.  klin.  Med.,  1893-94. 
76  This  low  record  of  free  HC1  was  found  in  one  case  (Case  17).  The  next 
lowest  record  was  t  gramme  per  mille.  This  Case  17  also  gave  the  high  com- 
bined acid  record  i-39  grammes  per  mille  ;  also  the  highest  difference  between 
contents  and  filtrate  123  grammes  per  mille.  The  total  acidity  and  the  quali- 
tative results  were  normal.  I  have  records  of  several  pathological  cases  with  a 
low  free  HC1  like  this  case,  which  were  relieved  by  administration  of  HC1.  So 
low  a  record  is  not  therefore  always  normal. 
