MOTIVES, 



129 



In this case, at least, it has been necessity, caused by the 

 desire to obtain the means of discharging Habilities, and moral 

 as well as pecuniary obligations, with the ambition of making 

 these inventions worthy of this age of improvements, that has 

 stimulated the inventor to proceed, step by step, to the comple- 

 tion of his plan. 



