"For reasons stated in the First Volume of these Experimental Researches, I have been induced to gather the remaining Series together, and to add to them certain other papers devoted to Electrical and Magnetic Research. To the prefatory remarks containing these reasons, I would recall the recollection of those who may honour these Researches with any further attention." Воспроизведено в оригинальной авторской орфографии издания 1855 года (издательство "Richard Taylor and William Francis").