The Boot and Shoe Manufacturers' Assistant and Guide. / Containing a Brief History of the Trade. History of India-rubber and Gutta-percha, and Their Application to the Manufacture of Boots and Shoes. Full Instructions in the Art, With Diagrams and Scales, Etc., Etc. Vulcanization and Sulphurization, English and American Patents. With an Elaborate Treatise on Tanning.

by Unknown

Twenty-ninth, to Nelson Goodyear, Newton, Conn., May 13, 1845. For India-rubber Fabrics.

Thirtieth, to James Bogardus, New York, May 21, 1845. For Sheering Machine for India-rubber.

Thirty-first, to Horace H. Day, Jersey City, N. J., June 7, 1845, H. G. Tyer, and J. Helm, New Brunswick, N. J. For Machine for cutting India-rubber Threads.

Thirty-second, to Charles Goodyear, New York, June 10, 1845. For India-rubber Fabrics.

Thirty-third, to James Bogardus, New York, November 21, 1845. For Machine for cutting India-rubber Threads.

Thirty-fourth, to Horace Day, New York, June 15, 1846. For India-rubber Portable Boat.

Thirty-fifth, to J. W. Harrison, New York, June 15, 1846. For process for grinding India-rubber previous to softening.

Thirty-sixth, to William F. Ely, New York, April 17, 1847. For preparing India-rubber.

Thirty-seventh, to Charles J. Gilbert, and Gamaliel Gay, New York, July 17, 1847. For India-rubber Fabrics.

Thirty-eighth, to Robert Story, and Thomas Hopper, New Brunswick, N. J., August 17, 1847. For India-rubber Shoes.