V. 

 CELL THEORIES. 1 



Strieker's article on "The General Characters of Cells," in his 

 " Human and Comparative Histology." Published 1868 ; translated 

 by Power, 1870. 



Beale, in Todd, Bowman and Beale's " Physiological Anatomy and 

 Physiology of Man," 1866 and 1871. 



IN placing the titles of these books at the head 

 of this article, I purpose less to review them 

 than to refer to the opinions of their authors in 

 illustration of a general survey of the conceptions 

 at present prevalent, with regard to the vital units 

 of living bodies. 



Observation is more a means than an end. The 

 end is to arrive at an accurate conception of the 

 processes of nature ; and very different conclusions 

 are arrived at by different men, founding their 



1 Reprinted from the Quarterly Journal of Microscopical Science, July* 

 1873. The article, as it originally appeared, contained a criticism 

 of the views held by the late Professor Hughes Bennett, but it has been 

 deemed unnecessary to reprint that part at the present date. A few 

 added sentences are placed within brackets. 



