Chemico- Physiological Researches. 319 



Hence the comjDOsition, the carbon being to the nitrogen 

 in the proportion of 8 fo 1. 



I. II. III. IV, 



Carbon 53*671 54.'454 55*002 54*976 



Hydrogen 6*878 7*069 7*216 6*867 



Nitrogen 15*763 15*762 15*817 15*913 



Oxygen, sulphur,\23.688 22*715 21-965 22*244 



iur,"l , 

 rusj ' 



and phosphon 



100*000 100*000 100-000 100*000 

 Venous fibrine, dissolved by Denis's method, was precipi- 

 tated by boiling alcohol, and analysed. 

 0*473 gave 0*0065 ash, or 1-37 per cent. 

 0*243 gave 0*465 carbonic acid, and 0*149 water. 

 0*365 gave 0*714 carbonic acid, and 0*223 water. 

 0*407 gave by a direct (Dumas's) determination of the ni- 

 trogen, 15*720 per cent. 



Hence results the composition per cent. 



I. II. 



Carbon 53*571 54*6«6 . 



Hydrogen 6*895 6*835 



Nitrogen 15*720 15*720 MOO'OOO 



Oxygen sulphur, \ ,3*814 22*759 I 



and phosphorus J 

 Fibrine obtained by whipping blood was dissolved by means 

 of acetic acid, and precipitated by carbonate of potash. It 

 gave, after extraction of all fats by alcohol and aether, 2*3 per 

 cent, ashes. 



0*250 gave 0*486 carbonic acid, and 0*161 of water. 

 0298 gave 0*739 of chloride of platina and ammonium, 

 hence = 16*065 nitrogen per cent. 

 Its composition was, therefore. 



Carbon 54*844-^ 



Hydrogen 7*219 



Nitrogen 16*065 UoO*00. 



Oxygen, sulphur, \ 21-872 

 and phosphorus J -^ 



[To be continued.] 



[Wc find, from the last Number of the Annales de Chimie et de 

 Physique which has reached us, that M. Dumas is engaged in a dis- 

 cussion with Prof. Liebig, as to the priority and originality of the 

 views contained in his Lecture given in last volume (j)]). 340, 456). 

 Wliich of these eminent men has best discharged the honourable 

 duty of fully and freely giving credit to their coterajjoraries and to all 

 who have preceded them in chcmico-physiological researches, cannot 

 be uninteresting as a matter of historical inquiry. — Edit.] 



