Comprising the Properties of the Raw Materials, and the manner of Mixing and Working them; with the Fabrication of Vulcanized and Hard Rubbers, Caoutchouc and Gutta Percha Compositions, Water-proof
Substances, Elastic Tissues, the Utilization of Waste, etc., etc. From the German of Raimund Hoffer. By W.T. Brannt. Illustrated 12mo. $2.50
HOFMANN.—A Practical Treatise on the Manufacture of Paper in all its Branches:
By Carl Hofmann, Late Superintendent of Paper-Mills in Germany and the United States; recently Manager of the "Public Ledger" Paper Mills, near Elkton, Maryland. Illustrated by 110 wood engravings, and five large Folding Plates. 4to., cloth; about 400 pages. $50.00
HUGHES.—American Miller and Millwright's Assistant:
By William Carter Hughes. 12mo. $1.50
HULME.—Worked Examination Questions in Plane Geometrical Drawing:
For the Use of Candidates for the Royal Military Academy, Woolwich; the Royal Military College, Sandhurst; the Indian Civil Engineering College, Cooper's Hill; Indian Public Works and Telegraph Departments; Royal Marine Light Infantry; the Oxford and Cambridge Local Examinations, etc. By F. Edward Hulme, F.L. S., F.S.A., Art-Master Marlborough College. Illustrated by 300 examples. Small quarto. $3.75
JERVIS.—Railroad Property:
A Treatise on the Construction and Management of Railways; designed to afford useful knowledge, in the popular style, to the holders of this class of property; as well as Railway Managers, Officers, and Agents. By John B. Jervis, late Civil Engineer of the Hudson River Railroad, Croton Aqueduct, etc. 12mo., cloth $2.00