By the same Author. 



(Preparing.} 



A MANUAL OF THE DISEASES OF THE BRAIN, 

 SPINAL CORD, AND NER VES. Crown 8vo. 



THE MODES OF ORIGIN OF LOWEST ORGAN- 

 ISMS: including a Discussion of the Experiments 

 of M. PASTEUR, and a Reply to some Statements by 

 Professors HUXLEY and TYNDALL. Crown 8vo. 

 1871. 4s. 6d. 



