J4 HENRY CAREY BAIRD & CO.'S CATALOGUE. 



GREGORY. Mathematics for Practical Men : 



Adapted to the Pursuits of Surveyors, Architects, Mechanics, and 

 Civil Engineers. By OLINTHUS GREGORY. 8vo., plates $3.00 



GRISWOLD. Railroad Engineer's Pocket Companion for th< 



Field : 



Comprising Rules for Calculating Deflection Distances and Angles, 

 Tangential Distances and Angles, and all Necessary Tables for En 

 gineers; also the Art of Levelling from Preliminary Survey to the" 

 Construction of Railroads, intended Expressly for the Young En- 

 gineer, together with Numerous Valuable Rules and Examples. By 

 W. GRISWOLD. I2mo., tucks ..... $1-75 



GRUNER. Studies of Blast Furnace Phenomena: 



By M. L. GRUNER, President of the General Council of Mines o$ 

 France, and lately Professor of Metallurgy at the Ecole des Mines. 

 Translated, with the author's sanction, with an Appendix, by L. I). 

 B. GORDON, F. R. S. E., F. G. S. 8vo. . . . $2.50 



Hand-Book of Useful Tables for the Lumberman, Farmer and 



Mechanic : 



Containing Accurate Tables of Logs Reduced to Inch Board Meas^ 

 ure, Plank, Scantling and Timber Measure; Wages and Rent, by 

 Week or Month; Capacity of Granaries, Bins and Cisterns; Land 

 Measure, Interest Tables, with Directions for Finding the Interest on 

 any sum at 4, 5, 6, 7 and 8 per cent., and many other Useful Tables. 

 32 mo., boards. 186 pages ...... .25 



HASERICK. The Secrets of the Art of Dyeing Wool, Cotton, 



and Linen, 



Including Bleaching and Coloring Wool and Cotton Hosiery and 

 Random Yarns. A Treatise based on Economy and Practice. By 

 E. C. HASERICK. Ilhistrated by 323 Dyed Patterns of the Yami 

 or Fabrics. 8vo $7-lo 



HATS AND FELTING: 



A Practical Treatise on their Manufacture. By a Practical Hatter. 

 Illustrated by Drawings of Machinery, etc. 8vo. . . $1.25 



HOFFER. A Practical Treatise on Caoutchouc and Guita 



Percha, 



Comprising the Properties of the Raw Materials, and the manner or 

 Mixing and Working them ; with the Fabrication of Vulcanized and 

 Hard Rubbers, Caoutchouc and Gutta Petcha Compositions > Water- 

 proof Substances, Elastic Tissues, the Utilization of Waste, etc., etc, 

 From the German of RAIMUND HOFFER. By W. T. BRANNT. 

 Illustrated I2mo. . $2.50 



HAUPT. Street Railway Motors: 



With Descriptions and Cost of Plants and Operation of the Various 

 Systems now in Use. 121110. ..... $1-75 



