( 298 ) 
3. In order to bring about a resorption so considerable, it is 
necessary to take an emulsion that can stay a long time in 
the intestine. 
The usual Na, CO, is not well adapted for the preparation 
of such an emulsion and the NaCl still less sv, because 
both are rapidly resorbed and with them the emulsion neu- 
tralized. A solution of sapo medicatus, however, seems to 
answer the requirement. 
4. As to the soap solution itself, it appears that this is resorbed, 
though much more slowly than the Na, CO;, and during the 
resorption is, at least for a part, converted into fat already 
in the mucosa. 
This conversion continues in the intestine that has been 
cut out; nay it is effected even when the mucosa has been 
minced fine. Heating to 80°, however, neutralizes the said 
property. 
5. As to the path taken by the fat in its resorption in the 
large intestine, it is highly probable that a part of it is 
transported through the blood capillaria. The experiments 
described above have at least shown with certainty that this 
is the case in the small intestine. 
Physics. — “Some Observations concerning an Asymmetrical Change 
of the Spectral Lines of Iron, radiating in a Magnetic Field”, 
By Dr. P. ZEEMAN. 
1. In observing spectral lines resolved into triplets by the action 
of the magnetic field, one is certainly struck by the symmetrical 
position and the equal intensity of the outer components of these 
triplets. There are especially in the case of iron not a few of the 
stronger lines, which seem to represent ideal cases of triplets, as 
originally predicted by Lorentz’s theory. It is only after more 
attentive inspection that several faint triplets are seen in which one 
of the outer components is apparently more intense than the other. 
On a former occasion?) I pointed out that there were reasons for 
expecting triplets with a more intense lateral component toward the 
1) Proeeedings Royal Academy of Scignces Amsterdam, June 1898. Astrophysical 
Journal, Vol. 9. Jan. 1899. 
