MATTHIAS JACOB SCHLEIDEX 



Bom at Hamburg, 1S04; died at Frankfort-on-JIain. iSSi. 

 First to establish clearly the notion that all plant and animal 

 tissues are composed of cells. A leader in the movement to 

 introduce scientitic methods into botany, and author ot a 

 textbook which revolutionized the study of plants. 



