392 
Story  of  the  Pa  paw. 
/Am.  Jour.  Fharm. 
I      August.  1901. 
The  dialyzed  solution  noted  above  gives  a  precipitate  with  acetic 
acid  and  potassium  ferrocyanide,  but  nitric  acid  gives  no  precipitate. 
The  solution  gives  the  ordinary  proteid  reactions,  and  apparently 
the  whole  of  the  proteids  are  reprecipitated  by  the  addition  of  a  large 
quantity  of  alcohol.  This  body  is  further  digested  after  washing 
and  treatment  with  a  fresh  solution  of  the  ferment,  and  also  in  an 
acid  solution  of  pepsin  ;  it  is  almost  completely  digested  in  an  alka- 
line solution  of  trypsin,  yielding  (as  shown  at  one  trial)  the  ordinary 
Method  of  collecting  Papaw  latex. 
products  of  digestion.  This  body  corresponds  quite  closely  to  the 
antialbumid  found  in  digestions  by  hydrochloric  acid  and  by 
trypsin.22 
The  products  arising  in  the  digestion  of  egg  albumen,  blood 
fibrin  or  beef  albumen  are  quite  alike  either  in  acid,  alkaline  or  neu- 
22  A  quite  similar  body  is  found  in  Brometin  digestion  of  albumen.  (See 
Chittenden— -Journal  of  Physiology,  No.  4,  1893.)  It  is  quite  evident  that  this 
body  would  be  readily  converted  into  soluble  absorbable  products  in  the  diges- 
tive tract. 
