INTRODUCTION OF THE MICROSCOPE 



55 



scopic observation did not produce its great results until the 

 nineteenth century, just after magnifying-lenses had been 

 greatly improved. 



Robert Hooke (1635-1703), of London, published in 1665 

 a book of observations with the microscope entitled Micro- 

 grapkia, which was embellished with eighty-three plates of 

 figures. Hooke was a man of fine mental endowment, who 

 had received a good scientific 

 training at the University of 

 Cambridge, but who lacked 

 fixedness of purpose in the 

 employment of his talents. 

 He did good work in math- 

 ematics, made many models 

 for experimenting with flying 

 machines, and claimed to have 

 discovered gravitation before 



Fig. 12. — Hooke 's Microscope, 1665. 



From Carpenter's The Microscope and Its Revelations. Permission of 

 P. Blakiston's Sons & Co. 



