AS REGARDS PROTOPLASM. 



BY 



JAMES HUTCHISON STIRLING, 



F.R.C.S., AND LL.D., EDIN. 



and Jmpptud (Bdttun, 



COMPLETED BY ADDITION OP 



PART II., 



IN REFERENCE TO MR HUXLEY'S SECOND ISSUE, 



AND OF 



PREFACE, 



IN EEPLY TO ME HUXLEY IN " YEAST." 



LONDON: LONGMANS, GREEN, & CO. 



1872. 

 [All lights Reserved.] 



