In this scientific journal written begun April 1, 1776, James Dinwiddie discusses magnetism and electricity. He includes several diagrams related to magnets and magnetic fields and queries at the end of the section. This ...

In this scientific journal by James Dinwiddie, he describes a number of galvanic experiments. This file consists of one journal that is 22 pages in length.

In this scientific journal written in December, 1801 in Calcutta, James Dinwiddie records his observations and experiments in galvanism and other electrical phenomena. This file consists of one journal that is 65 pages in length.