Scientific Intelligence. 405 



and let us place next to it the group, occurring originally in casein 



1 ^ •% • 



and albumin 



Casein. Albumin from eggs. Albumin from blood. 



C, . 54-8 . . 55-6 . . 550 



H, . 7-1 . . 71 . . 7-2 



N, . 15-1 . . 14-4 . . 14-5 



O, . 230 . . 22-9 . . 23-3 



it will now easily be seen, that there exists a considerable differ- 

 ence. In the first three groups is contained evidently less C and 

 more 0. 



They are expressed by 





Atoms. Calculated. 



C, . . 36 . . . 53*6 



H, . , . . 54 . ■ . . 6-7 



N, 8 13-9 



O, . . . 13 25-8 



The first change of the albumin in the stomach is therefore 

 only solution : that of casein may also be oxydation. I say it 

 may be, for it is possible that this group already preexists in 

 casein. This can only be determined with certainty when the 

 other constituents of casein shall have been farther examined. 



At all events, m casein, after its solution in the stomach, the 

 same organic group exists as in fibrin, and there is so far an inti- 

 mate relation between fibrin and casein. Casein must easily pro- 

 duce fibrin, while albumin remains still albumin in the stomach 

 a nd probably undergoes no other change, except in the proportion 



of sulphamid it contains. 



The question now is, how far the use of milk will be advisable 

 in inflammatory diseases. I address this question to medical ex- 

 perience, but I am far from establishing any opinion, upon the 

 numerical results of experiments. Medical experience has its 

 °wn rights, as well as chemistry. The one must not dictate to 

 the other, but to propose such questions is both the right and the 

 duty of chemistry. 



SCIENTIFIC INTELLIGENCE. 



L Chemistry and Physics. 



1. On the Atomic Volume of some Isomorphous Oxyds of the regular 

 system; by Chas. Geehardt.— It is known that analogous isomorphous 

 compounds possess the same atomic volume. This volume however, is 

 not rigorously the same, on account of the differences which naturally 

 exist between the angles of isomorphous substances, or the variations of 

 temperature and density under which they have been taken, which last 

 alone modifies the angles of the crystals by an unequal dilatation of 



l heir axes. As 



