404 



Changes in Albuminous Substances durin 



€ 



D 



of ammonia was added, and the precipitate washed with water, 

 alcohol and ether, and dried at 130° C. 



0-745 gave 0-004 ash. 



T. 0-645, free of ash, 87 of moist N at 17°-5 C. and 766 m. m. 



a it qx a u a a « » » u 



II. 0-640, 



I. 0-573, 



II. 0513, 



85 



(I 

 it 



U 



and 



" 0-998 " 



" 0-319 



u 



I. 1-103 gave 01465 of sulphate of barytes, by means of caus- 

 tic soda and nitre. 

 II. 0-938 gave 0*118 of sulphate of barytes. 



Undissolved albumin.* 



Dissolved and precipitated. 



c, 

 H, 



N, 

 O, 



s, 



Ph, 



53-5 



7-0 



15-5 



22 



1-6 



0-4 



I. 



52-74 



6-93 

 15-97 

 22-53 



1-83 



H. 



53H 

 6-93 



15-60 



22-63 



1-73 



Mean. 



53 

 6-9 



15-8 

 22 5 



1-8 



The phosphorus, probably not contained in the precipitated 

 albumin, was not determined. The quantity of the sulphur ex- 

 ceeds that in albumin by 0-2 ; however, I do not doubt that this 

 increase must only be ascribed to an error of experiment. It 

 showed at any rate the reaction of sulphamid. 



H, 

 O, 





Without SN3H4. 



530 



. 530 



6-9 



6-8 



15-8 



. 14-2 



22-5 



. 22-5 



1-8 



• • • • ♦ * 



54-9 



7-0 



14-7 

 23-4 



1000 



1000 



Thus albumin has not been changed in composition, as regards 

 the C, N, H, O and S N* H 4 , and it appears that no new combi- 

 nation of albumin is produced during the digestion in the stomacn. 

 Is this the case also with casein ? No other conclusions can be 



drawn from the above analysis than that, either casein contain 

 already a substance richer in oxygen, or that the production o 

 such a combination is caused during the solution in the stomac . 



compare 



after 



deducting the elements of sulphamid from fibrin, hair 



dissolved casein: 





Fibrin. 



Hair. 



G, 



54-4 



. 53-6 



H, 



7-0 



7-1 



N, 



14-4 



. 14-6 



0, 



24-2 



. 24-7 



Dissolved casein. 



. 541 



70 



14-7 



24-2 



Scbeik. Onderz., Deel iv, p. 223. 



