PLATE 4 



Sections of medulla of Roach. 

 S.G.— Stratum granulare. S.M. — Stratum moleculare. C.A.A.— Central acoustic 

 area. A.T. — Acoustic tubercle. L.L.N. — Lateral line nerve. VII. — Seventh 

 or facial nerve. Vth. — Fifth or somatic-sensory lobe or nerve. G.T. and 

 G.L.S.G.T.— Great lateral secondary gustatory tract. Xn. — Tenth or vagal 

 nerve. D.F.V. — Descending fibres of fifth lobe. D.F.VII. — Descending fibres 

 of facial lobe. 



