Trans. ACAD. Scr. oF St. Louis, Vou. XXIII. PLaTe XLII. 
T 
BP 
an 
* Hl 
: : nF: + : = 5 
4 3 js | tap at 
i 4 fon eel Ly aK 
- Bee 
1 7 = 
ieee bee ete eis bs rs iH 
Pat] a 
oa aS ee ey We x Ai 
# <a 
ttt <= +] o| @ i wa? Loved 
— Dr eee 
JSS 
i 
| 
ea 
| 
| 
i 
\ 
\j 
\ 
[ 
Hott 
T ui ! 1 
ne 
-; 
i 
MAGNETIC EFFECT OF SOUND WAVES. 
n 
eet 
| 
| 
| 
15, 
| 
| 
{ 
pehackict 
Lasts 
if 
| 
| 
| 
+4 
pe Se 
a Se BE 
im 
Titet | f 
wid 
is 
; 
t 
: 
1 
RARE SMe | 
3S SB ae 
a Se a 
ERAS RE, 
