( 41 ) 



fill' lu'liiiid iiilcsliiial iiiiicosa, i-csp. iiilcsliiial juice, with regard lo 

 their iiithieucc of lihorating (rvpsiii fi-(»iii ti-\ iisinoucii. 



Equal rcisulls as widi acolic acid were ohiaiiicd w idi hiidrorliloric 

 (tcid, htctic (((■/(/ and hiiti/nc dcid. V\)v liydiMcldoric acid dus iiia\' 

 iippcai' tVoui llic foUow iiiu' siinimaiv . 



TAIII.F. V. 



Tliose figures sjiow lliat iivdrochlofic acid in c.xlrciiiclv weak cun- 

 cenli-alioMs (0.02^'.^ and O.Oö " „) does nol iiindci- die li'v|(siii from 

 Iteinji" sel free. Tiie effect is not favoiiraliic liowcxcr. Sonicw lial 

 sti'Oiig-ei* ('Oiu'enfi-alioiis of livdrocldoric acid (O.J " „. 0..") " „' |irc\('iil 

 file lihei'ation of ti-ypsin eiilircly. Tlial no ti'vpsiii lias hccii scl free 

 in () and 7. the action of which may have lieeii prevcnled liy die 

 liydrocliloric acid, lias been proNcd from die fact dial no digeslion 

 of while of egg had oeeun'ed, cncmi afler 2 X -"^ hours, when afler 

 41 hoiii's a solution of Na.^ ('< ).; had heen a(hh'd |o llie li(piids naiiied 

 in () and 7, iiiilil the propoi'lion of Xa., ('()., amoiiiiled lo circa 1 "/„. 



From these researches we may with cei-tainly draw die lodowing 

 eonciiisions. 



1) Heidenhain\s opijiion, ^vhieh has been current sijice 1875 and 



