There are several reported routes of transmission of the rabies virus. Rabies is most often transmitted through a bite from an infected animal. Less frequently, it can be passed on when the saliva of an infected animal enters another animalâs body through mucous membranes or an open, fresh wound.
Eli Whitney invented a cotton gin. It was an improvement on the roller gins of the time in that it separated seeds from fibers faster and more easily. But his greater achievement was, arguably, the development of interchangeable parts.
The Factory. In 1798 Eli Whitney built a firearms factory near New Haven. The muskets his workmen made by methods comparable to those of modern mass industrial production were the first to have standardized, interchangeable parts. During the 19th century, New Haven was a vital community that reached beyond its borders across America.