486 Intelligence and Miscellaneous Articles. 



almost transparent, and had in fact the appearance of gum arable ; 

 it was gritty between the teeth, and softened but slowly in water ; it 

 had lost 90 per cent, of its weight in drying. It was then reduced 

 to fine powder and again dried at the temperature of 212°; this 

 drying was repeated previously to every analysis, in order to get rid 

 of the hygrometric moisture. 



The white of egg in this state was repeatedly digested in aether 

 to remove the fatty matter. 



To determine the amount of inorganic matter, a portion of the dry 

 substance was incinerated in a platina crucible ; the residue amount- 

 ed to exactly 2^ per cent. ; it consisted principally of phosphate of 

 lime and a little sulphate of lime. Berzelius found 1'8 per cent., 

 and Mulder 4*12 per cent., — the proportion does not appear therefore 

 to be always equal. 



M. Vogel recommends those who would repeat these experiments, 

 not to incinerate in a platina crucible, on account of the action which 

 the phosphorus separated from the acid may have on the metal. He 

 recommends a porcelain crucible, and the use of a little nitric acid 

 or nitrate of ammonia to expedite the process. 



The white of egg, prejiared as has been described, was analysed 

 by oxide of copper and chromate of lead, while a third analysis was 

 performed on a portion which had been dissolved in potash and pre- 

 cipitated by sulphuric acid. The results were 



Precipitated Albumen. 

 I. II. III. 



Carbon 51-228 52-817 51-856 



Hydrogen 7-232 7-206 6-766 



Azote 16-465 16-970 16-403 



Oxygen 22-745 20-677 22-645? 



Ashes 2-330 2-330 2-330? 



100- 100- 100- 



These results, excepting the azote, agree very nearly with those 

 obtained by M. Mulder, viz. 



Carbon 52-43 

 Hydrogen 6-73 

 Azote 15-30 



Oxygen 21-12 



Ashes 4-12 99-7 



M. Vogel obtained, as M. Mulder had done, a greenish blue salt of 

 copper, by treating a solution of white of egg in distilled water with 

 one of sulphate of copper ; and he considers it also as an album enate 

 of copper ; and he ascertained by analysis that the albumen under- 

 goes no alteration in this combination. — Journal de Pharmacie, Sep- 

 tember, 1839. 



ANALYSIS or FIBRIN. 



M. Vogel obtained fibrin from ox blood. The blood was stirred ; 

 the small filaments of fibrin were washed with water till it came 

 away colourless ; when thus purified the fibrin has a bluish white 

 colour like skimmed milk. It was dried first at the temperature of 



