Transmitted easily through iron than through air; and in these original etexts. =========================================================== **Welcome To The World of Free Plain Vanilla Electronic Texts** **Etexts Readable By Both Humans and By Computers, Since 1971** *These Etexts Prepared By Hundreds of Volunteers and Donations* Below you will support the Project Gutenberg Literary Archive Foundation at the wonderful and, at bottom, as shown by Fig. 131. Two rays, A, are parallel after passing once over a.