CHAPTER VI. 



CELL AND PROTOPLASM HISTORY SINCE 1860. 



WE have seen that in 1850 Cohn came very close to 

 the protoplasm theory ; Remak also gave the name of 

 protoplasm to animal cell contents, and although no 

 one generalized the theory completely before Beale, in 

 1860, still several were working in that direction, and 

 by most of the German authors the credit of so doing 

 is generally given to Max Schultze, in 1861. How far 

 the claims of this otherwise highly-distinguished 

 naturalist are to be put into competition with those of 

 Beale, is best shown by his memoir, " Das Protoplasma 

 der Rhizopoden, &c. Leipzig, 1863." As this may 

 not be accessible to many, I give here an analysis of 

 the parts bearing on this subject : 



In Reichert and Du Bois-Reymond's "Archiv.," 1861, Max 

 Schultze expressed the opinion that the dispute respecting the 

 nature of the muscular and connective tissue corpuscles would 

 easily be settled if people would give up some part of the prevail- 

 ing views on the essential constituents of the cell, more especially 

 in respect to the relation of the cell membrane and inter- 

 cellular substance to the cell contents. At the same time, he 

 said that the portion of the cell contents corresponding to the 



