Jftrsit. 



THE CELLULAR BIOCOSMOS. 



So we shall designate the first and most 

 immediate part or stage of the total Bio- 

 cosmos. The cell is the primordial form of 

 Life, its first appearance to the senses ; it is, 

 therefore, the beginning. Already we have 

 given a brief statement of its process; here 

 the fact must be noted that the cell has risen 

 to be the leading principle in the science of 

 Life. Biology at present chiefly concerns it- 

 self with the cell, which has become not sim- 

 ply an object of theoretical investigation, but 

 has deeply entered, if not quite usurped the 

 practical field of the sciences of disease and 

 health. Medicines-has been transformed in re- 

 cent years by the knowledge and treatment 



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