J). VAN NOSTRAND. 13 



G-illmore's Limes and Cements. 



Fourth Edition. Revised and Enlargd. 



8vo. Cloth. $4.00. 



PBACTICAL TEEATISE ON LIMES, HYDEAULIC CE- 

 MENTS, AND MOETAES. Papers on Practical Engineering, 

 TJ. S. Engineer Department, No. 9, containing Eeports of 

 numerous experiments conducted in New York City, during the 

 years 1858 to 1861, inclusive. By Q. A. GILLMOEE, Brig-General 

 U. S. Volunteers, and Major U. S. Corps of Engineers. With. 

 numerous illustrations. 



" This work contains a record of certain experiments and researches made 

 under the authority of the Engineer Bureau of the War Department from 

 1858 to 1861, upon the various hydraulic cements of the United States, and 

 the materials for their manufacture. The experiments were carefully made, 

 and are well reported and compiled. ' Journal Franklin Institute. 



Gillmore's Ooignet Beton. 



8vo. Cloth. $2.50. 



COIGNET BETON AND OTHEE AETIFICIAL STONE. By 



Q. A. GILLMOKE. 9 Plates, Yiews, etc. 



This work describes with considerable minuteness of detail the several kinds 

 of artificial stone in most general use in Europe and now beginning to be 

 introduced in the United States, discusses their properties, relative merits, 



and cost, and describes the materials of which they are composed 



The subject is one of special and growing interest, and we commend the work, 

 embodying as it does the matured opinions of an experienced engineer and 

 expert. 



Williamson's Practical Tables. 



4to. Flexible Cloth. $2.50. 



PEACTICAL TABLES IN METEOEOLOGY AND HYPSO- 

 METEY, in connection with the use of the Barometer. By Col. 

 E. S, WILLIAMSOM, U. S. A. 



