THE MICROSCOPE. 



153 



not until 1850 was he able to put the ideas of former years into 

 practical shape. After 14 years constant work in the school 

 room, his health failed and he sought recreation in the work of 



REV. FRANCIS WOLLE. 

 constructing a paper bag machine. In 1852 he received his first 

 patent, and he built a few machines in 1855. He then went to 

 Europe where more patents were procured. His brother was 

 with him constantly giving financial aid. After seven years 



