PEATIES6 
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Fic. 24.—General view, with partial dissec- 
tion, of upper surface of Torpedo 
marmorata.Shows the twolateral 
electric organsand the brain with 
its electric lobes lying centrally 
between the electric organs. 
After Fritsch. 
Fig. 25.—Vertical, transversesectiontaken 
through fish seen in fig.24. Shows 
the two lateral electric organs 
with their vertical column of flat 
disks, the electroplaxes, and the 
brain, cut in the region of the 
electric lobes, lying between the 
electric organs. The polarity of 
the E. M. F. generated in the 
electric organs is indicated by 
the plus and minus signs. 
Fic. 26.—Transverse section through me- 
dulla oblongata of Torpedo mar- 
morata. The section passes 
through the thickest part of the 
electric lobes, whose large motor 
nerve-cells are seen to compose 
the greater part of its mass. The 
nerve processes of these cells are 
seen to be leaving the lobes later- 
ally as the large electric nerves 
that go to the electric organ. 
After Fritsch. 
Fig. 24. 
Fia. 26. 
