PLATE CIX. 



Irl. 



FIO. 295. Diagram of the nervous system of a frog -anterior (or inferior) view, i, 2, 3, &c., to 10, Cranial nerves 

 in order. I'o, ophthalmic branch; Vl>, palatine nerve ; IV, superior maxillary ; IV, inferior maxillary; IV 

 tympanic nerve, which, after joining with the nimux i-i,ininnir,i,ix of the \j_nis, goes to form A", the facial nerve. 



Kl.issiiplmryiiKi-al nc-rvc ; A' 3, nerves to stomach ami intestines; A" 4, cutaneous brunch ; A" II, iMii^lion of vagus 

 M, spinal curd ; I'toio', spiual nerves in order; ,>' i tu ,s'in, symp-itlietic ganglia, numix-red ac-conliiiK to the 

 nerves with which they coininunicate ; Xc, emral nerve ; Xi, sciatic nerve. (After Ecker. flightly altered.) 



FIG. 296. View ..f the hrain of a frug from above, enlarged, i.ol. olfactory lo>>8; Il.c. cerebral hemispheres. 

 O.p. pineal hody ; Th.o. opiic thalami ; L.op. optic lobes ; C. cerebellum ; M.o. Medulla oblongata ; S.rh. sinus 

 rhomlioidalis. 



FIG. 297. Commutator. 



