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DR. F. SEMOX AND MR. V. HORSLEY ON AN INVESTIGATION 
Descliption of Plates. 
PLATE 31. 
Fig. 1. Pliotograph of right hemisphere of a Macacque’s brain, Macacns sinicus. 
The total or absolute representation of the larynx is indicated by dotting, 
the depth of the same showing the degree of representation. 
R. Fissure of Rolando. 
Pc. Prmcentral sulcus. 
F. Focus of highest development of laryngeal representation, i.c., pure 
intrinsic movement of adduction. 
V. The small secondary sulcus indicated by that letter. 
S)!- Fissure of Sylvius. 
PLATE 32. 
Fig. 2. Three-quarters view of Cat’s brain, half natural size. 
c.s. Crucial sulcus. 
d. Krause’s centre of adduction. 
d'. Centre of adduction also noted by the authors. 
h. Focus of abduction. 
Fig. 3. Base of Cat’s brain, half natural size 'j 
Fig. 4. Side view of Cat’s brain, natural size Lettering as above, fig. 2. 
Fig. 5. ,, ,, half natural size 
Fig. 6. View of Cat’s brain fi'om above. Tire right hemisphere has been sliced 
horizontally, as described in the text, to show the internal capsule. 
olf. Olfactory lobe. 
p.f. Praefrontal fibres. 
Ca. Caudate nucleus, 
r/. Genu. 
o.th. Optic thalamus. 
n.J. Lenticular nucleus (putamen). 
F.S. Fissure of Sylvius. 
1. Anterior limit of fibres excitation of which produces acceleration of 
respiration. 
2. Posterior limit of fibres representing acceleration and abduction 
and commencement of representation of a/Iduction. 
3. Centre of anterior limb marking commencement of representation 
of abduction. 
