613 
z 1 f/l—«#z : 8 ae 
viz. G =) == =( ) . We arrive at this relation by writing 
1 2 
ee v n wv 
mT,b, for a, and the value m7,b, for a, in the equation 
1 
v dq 
Us ie ds =.) GY, ae b, (= ‚) 
Ar zn x 1 . 
v ee. v 
age a, Pain Pas c= 
au 1 t 1 
If then 7, and 7, are interchanged, the given equation is verified. 
= a pe U v 
Only in the: ease. 7, == 7, (= ) and (=) are of course equal 
es — wt 1 ‘ iN 2 
: : fi 
and the value of this quantity is found equal to ——, as was found 
n 
above. If Lv, = 0, te dE 
The two equations, from which the given relation can be derived 
HH 
are in the first case, if we put ——= N;: 
tT 
ml’ b a —mTb 
ee ae ee =) 
1 b, 
and in the 2ed case: 
mT lL eb 
N,’ — dte + Nm (1,—-T.) + nn en sul 
b, b, 
The second equation multiplied by such a factor that in this 
too the known term becomes equal to that of the first equation, 
yiclde NV; vo 
n 
The increase of pressure, if the system is entered from the ether 
side, is, however, not so considerable as has been found by Dr. SCHEFFER. 
A 
The quantity = which appeared to be almost constant, had for 
? 
v 
- 15,45 
70,316 the value ——. — 48,9. It is true that strictly speaking this 
did not refer to the value of the pressure which we call p.,. But 
the difference cannot be great for wv == 0,316. From the three-phase 
pressure which we have calculated, terminating at v = 0,373, the 
| dd ld foll fi BR tit ay 
ft: ee * —, The quantity — for per 
value 0,473 a would: follow Tor Ge ne NAO OER 
can, of course, not be constant. For water this pressure is 190, and 
for greater value of x (reckoned from the ether side) the quantity 
