Farm implements, and the principles of their construction and use. An elementary and familiar treatise on mechanics, and on natural philosophy generally, as applied to the ordinary practices of agriculture. Воспроизведено в оригинальной авторской орфографии издания 1854 года (издательство "New York, Harper and Brothers"). Это и многое другое вы найдете в книге Farm implements, and the principles of their construction and use (John Jacob Thomas)