IG HENRY CAREY BAIRD'S CATALOGUE. 



ORTON.— Underground Treasures : 



How and Where to Find Them. A Key for the Ready Determination 

 of all the Useful Minerals within the United States. By James 

 Okton, a. M. Illustrated, 12mo $1.50 



OSBORN.— American Mines and Mining: 



Theoretically and PracticaHy Considered. By Prof. H. S. OSBORN. 

 Illustrated by numerous engravings, bvo. {In preparation.) 



OSBORN.— The Metallurgy of Iron and Steel : 



Theoretical and Practical in nil its Branches; with special reference 

 to American Materials and Processes. By H. S, O.sborn, LL. D., 

 Professor of Mining and ^Metallurgy in Lafayette College, Easton, 

 Pennsylvania. Illustrated by numerous large folding plates and 

 wood-engravings, 8vo. $15.00 



OVERMAN.— The Manufacture of Steel : 



Containing the Practice and Principles of Working and Making Steel. 

 A Handbook for Blacksmiths and Workers in Steel and Iron, Wagon 

 Makers, Die Sinkers, Cutlers, and Manufacturers of Files and Hard- 

 ware, of Steel and Iron, and for Men of Science and Art. By Fred- 

 erick Overman, Mining Engineer, Autiior of the " Manufacture of 

 Iron," etc. A new, enlarged, and x-evised Edition. By A. A. Fesquet, 

 Chemist and Engineer $1.50 



OVERMAN.— The Moulder and Pounder's Pocket 

 Guide : 



A Treatise on Moulding and Founding in Green-sand, Dry-sand, Loam, 

 and Cement ; the Moulding of Machine Frames, Mill-gear, Hollow- 

 ware, Ornaments, Trinkets, Bells, and Statues ; Description of Moulds 

 for Iron, Bronze, Brass, and other Metals ; Plaster of Paris, Sulphur, 

 Wax, and other articles commonly used in Casting; the Construction 

 of Melting Furnaces, the Melting and Founding of Metals ; the Com- 

 position of Alloys and their Nature. With an Appendix containing 

 Receipts for Alloys, Bronze, Varnishes and Colors for Castings ; also. 

 Tables on the Strength and other qualities of Cast Metals. By Fred- 

 erick Overman, Mining Engineer, Author of " The Manufacture 

 of Iron." With 42 Illustrations, 12mo $1.50 



Painter, Gilder, and Varnisher's Companion : 



Containing Rules and Regulations in everything relating to the Arts 

 of Painting, Gilding, Varnishing, Glass-Staining, Graining, Marbling, 

 Sign-Writing, Gilding on Glass, and Coach Painting and Varnishing ; 

 Tests for the Detection of Adulterations in Oils, Colors, etc. ; and a 

 Statement of the Diseases to which Painters are peculiarly liable, with 

 the Simplest and Best Remedies. Sixteenth Edition. Revised, with 

 an Appendix, Containing Colors and Coloring -Theoretical and 

 Practical, Comprising descriptions of a great variety of Additional 

 Pigments, their Qualities and Uses, to which are added, Dryers, and 

 Modes and Operations of Painting, etc. Together with Chevreul's 

 Principles of Harmony and Contrast of Colors. 12mo., cloth. $1.50 



