D. VAN- JSrOSTJiAN^D. H 



Bauerman on Iron. 



12mo. Cloth. $2.00. 



TREATISE ON THE METALLUEGY OF lEON. Contain- 

 ing outlines of the History of Iron Manufacture, methods of 

 Assay, and analysis of Iron Ores, processes of manufacture of 

 Iron and Steel, etc., etc. By H. Battebmas. First American 

 edition. Revised and enlarged, with an appendix on the Martin 

 Process for making Steel, from the report of Abram S. Hewitt. 

 Illustrated with numerous wood engravings. 



" This ia an important addition to the stock of technical -works published in 

 this country. It embodies the latest facts, discoveries, and processes con- 

 nected with the manufacture of iron and steel, and should be in the hands of 

 every person interested in the subject, as well as in all technical and scientific 

 libraries." — Scientific American, 



Link and Yalve Motions, by "W. S. 

 Aucliincloss. 



8vo. Cloth. $3.00. 



APPLICATION OF THE SLIDE VALVE and Link Motion to 

 Stationary, Portable, Locomotive and Marine Engines, with new 

 and simple methods for proportioning the parts. By William 

 S. AucHiNCLOss, Civil and Mechanical Engineer. Designed as 

 a hand-book for Mechanical Engineers, Master Mechanics, 

 Draughtsmen and Students of Steam Engineering. All dimen- 

 sions of the valve are found with the greatest ease by means of 

 a Printed Scale, and proportions of the link determined without 

 the assistance of a model. Illustrated by 37 wood-cuts and 21 

 lithographic plates, together with a copperplate engraving of the 

 Travel Scale. 



All the matters we have mentioned are treated with a clearness and absence 

 of unnecessary verbiage which renders the work a, peculiarly valuable one. 

 The Travel Scale only requires to ba known to be appreciated. Mr. A. writes 

 so ably on his subject, we wish he had written more. London Enr- 

 gineering. 



'We have never opened a work relating to steam which seemed to us better 

 calculated to give an intelligent mind a clear understanding of the depart- 

 ment it discusses. — tieieniifie Ameriean. 



