Anton van Leeuwenhoek (1632-1723) was 

 a Dutch businessnnan with the hobby of 

 making microscopes and looking at things 

 nobody had ever seen before. He discov- 

 ered tiny animals in pond-water 



One of Leeuwenhoek's microscopes. 

 Through the nearly spherical lens in a 

 copper plate tiny objects could be seen 

 greatly magnified 



The Bi'tlmann Arrhive 



The Bettmann Archive 



An English contemporary of Leeuwen- 

 hoek's, Robert Hooke (1635-1703), had 

 the same hobby. As a scientist he made 

 more systematic studies of bits of plants 

 and animals 



In a thin slice of oak bark or cork, Hooke 

 saw little compartments to which he gave 

 the name cells or chambers, since they 

 suggested the cells of a beehive or the 

 rooms of a house. The Italian Malpighi 

 also saw such "cells" in other plant frag- 

 ments 



THE MICROSCOPE AND CELLS 



