- 13 — 
B. — Soluzione con circa il quinto di solfato sodico. 
Prima della immersione 
Sei giorni dopo la immersione 
Aumento 
rappor- 
talo 
al peso 
primitivo 
Peso 
Diametro 
f'w , fig. 1 
Diametro 
s*', fig. 1 
Peso 
Diametro 
w'w, fig, 1 
Diametro 
ss , fig. 1 
._ 
■ i 
grm 
. 0.044,0 
mm. 
/ .0 
mm. 
1.8 
grm 
. O.OSl.O 
mm. 
8.8 
mm. 
2.1 
0.159 
ungi] 
2 
,1 
0.038.3 
». ù 
1 .0 
I 
0.046.0 
» 
9.4 
» 
2.0 
O.lOa 
i ÌM 
3 
)) 
0.033.0 
» 
7.3 
1 .0 
)) 
0.039.0 
B 
7.9 
B 
2.0 
0.182 
iiplic 
4 
s 
0.030.0 
D. 7 
» 
1 . 0 
» 
0.037.5 
» 
7.0 
2.0 
0.237 
o 
/. 
5 
B 
0.023.0 
B 
7.0 
» 
1 .4 
» 
0.028.0 
8.0 
» 
1.7 
0.217 
islall 
6 
» 
0.020.0 
» 
1 1.3 
1 .2 
B 
0.024.5 
» 
12. 3 
» 
1.5 
0.22o 
. 7 
» 
0.011.0 
» 
G.l 
0.8 
» 
0.014.0 
B 
7.0 
» 
1.0 
0.273 
medio 
0.028.Ò 
» 
0.054.5 
0.203 
è ? 1 
6.2 
» 
2.8 
» 
7.7 
» 
2.9 
0.333 
H; 
9 
)l 
0.031 .0 
» 
5.2 
2.7 
8 
0.041.0 
6.7 
2.7 
0.323 
è 1 
10 
» 
0.014.5 
B 
4.0 
2.5 
B 
0.024.5 
» 
5.9 
» 
2.5 
u.oyu 
medio 
B 
0. 026.2 
0.0ù6.S 
0 . 505 
r! / 
1 1 
0.044.5 
» 
o.O 
» 
4.1 
B 
0.079.5 
6.6 
B 
4.7 
U. /87 
S { 
si \ 
te-- 1 
J o 
\l 
» 
0.033.5 
» 
5.8 
)) 
2.6 
11 
0.062.5 
S 
7.5 
3.1 
U.ODD 
con 
dupl 
0.027.5 
» 
4.7 
B 
3.6 
1) 
0.058.0 
» 
6.4 
3.7 
1 . 109 
ione 
14 
» 
0.022.0 
» 
o.O 
» 
2.4 
B 
0.045.5 
11 
6.4 
» 
3.1 
I .Ub/ 
15 
0.017.5 
» 
3.6 
» 
3.0 
B 
0.041.0 
5.2 
3.8 
1 .0 1.5 
medio 
» 
0.029.0 
B 
0. 037.3 
0.976 
Diametro 
Diametro 
Diametro 
Diametro 
fìg.4 
CC',Ù 
g. 18 
w'O, 
fig. 4 
ce, fi 
g. 18 
16 
» 
0.048.0 
mm. 
4.0 
mm. 
5.1 
» 
0.097.5 
mm 
5.2 
mm. 
6.6 
1.031 
o I 
» 
0.033.5 
3.4 
B 
3.4 
0,065.0 
» 
5.0 
B 
3.8 
0.940 
H 
) '8 
0.029.5 
» 
3.0 
B 
4.0 
» 
0.058.0 
a 
4.2 
» 
5.3 
0.966 
§ 5 
) 
0.019.5 
3.2 
» 
2.7 
» 
0.038.5 
B 
3.9 
3.0 
0.974 
co 1 
20 
» 
0.014.0 
2.5 
3.7 
» 
0.060.5 
B 
3.9 
4.6 
3.203 
o 
21 
0.009.0 
» 
2.4 
2.6 
» 
0.026.0 
» 
3.0 
» 
4.0 
1.889 
medio 
» 
0.023.6 
» 
0.037.6 
1.230 
