Literary Notices. Ivu 



develops a number of interesting points correlated with the habits and 

 instincts of these animals. Compare the results of Polimanti on the 

 functional distribution of the motor roots from the cord of these 

 animals. 1 



The cerebrum of the hedgehog — hitherto described as smooth — is 

 found to present a very rudimentary Sylvian fissure and another more 

 strongly developed which the experiments permit to be homologized 

 without doubt with the pre-sylvian fissure. He adds, " On comparing 

 the brain of the hedgehog with that of the dog and monkey, it will be 



The Brain of the Rabbit. 



seen that the conclusion arrived at by Sir William Turner, namely, 

 ' that the pre-sylvian and pre-central fissures are homologous ' — a con- 

 clusion based on Ferrier's researches — is fully born out." 



The experiments on the rabbit's brain were very complete and 

 amply verified. The results are presented in the accompanying dia- 

 gram copied from the author's. It is to be noted that the areas for the 

 eye and ear are centres of motion, not of sensation. The discovery 

 of a sigmoid gyrus and the perfectly typical arrangement of the motor 

 areas as compared with the other mammals are points of the greatest 

 interest. c. j. h. 



Memory and the Specilic Energies of the Nervous System.'* 



The two lectures bound up in this little volume are both suggest- 

 ive. The first will prove of especial interest in connection with the 



^ Lo Sperhneniale, XLVIII, 3, 1894. 



''Hering, Ewald. Memory as a general Function of Organized Matter 

 and The Specific Energies of the Nervous System. Chicago, The Open Court 

 Publishing Co., i8gj. 



