588
0
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/
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-
Pt-
tt
S
-e
-a
I
eat
I
I
/
-
`-7
-a
A
4 I
S
-
- -
A
4,-
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-
2çz~-
a(ç*
fl#41 .4
Hit'
[p. 49]
A
BA'
B'
B
&
B'
vert.
IA
I®
eau glycerinée
O,
y
1,
2
z
1
-
~.
-
- -
-
.. .. -
Zugleich Konstruktion des
Zentrums.
[p. 50]
I
=-`
a-x1a -x2
x1(a-x2)
=
-x2(a-x1)
2x1x2
-
a
(x1
-i-x2)
x2-axO
AC
M
x=O&xO[Doppl?.]
cCM
H
I
x x x
HM