HENRY CAREY BAIRD'S CATALOGUE. 



DflJRD. THE AMERICAN COTTON SPINNER, AND MANA- 

 GER'S AND CARDER'S GUIDE : 



A Practical Treatise on Cotton Spinning ; giving the Dimen- 

 sions and Speed of Machinery, Draught and Twist Calcula- 

 tions, etc. ; with notices of recent Improvements : together 

 with Rules and Examples for making changes in the sizes and 

 numbers of Roving and Yarn. Compiled from the papers of 

 the late ROBERT H. BAIKD. 12mo. . . . $1 50 



pAKER. LONG-SPAN RAILWAY BRIDGES : 



Comprising Investigations of the Comparative Theoretical and 

 Practical Advantages of the various Adopted or Proposed Type 

 Systems of Construction; with numerous Formulae and Ta- 

 bles. By B. Baker. 12mo. . . . . $2 00 



TDAKEWELL. A MANUAL OF ELECTRICITY PRACTICAL AND 



- THEORETICAL : 



By F. C. BAKEWELL, Inventor of the Copying Telegraph. Se* 

 cond Edition. Revised and enlarged. Illustrated by nume- 

 rous engravings. 12mo. Cloth . . . . $2 00 



"DEANS. A TREATISE ON RAILROAD CURVES AND THE LO- 

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By E. W. BEANS, C. E. 12mo. (In press.) 



pLENKARN. PRACTICAL SPECIFICATIONS OF WORKS EXE- 

 CUTED IN ARCHITECTURE, CIVIL AND MECHANICAL 

 ENGINEERING, AND IN ROAD MAKING AND SEWER- 

 ING: 



To which are added a series of practically useful Agreements 

 and Reports. By JOHN BLENKABN. Illustrated by fifteen 

 large folding plates. 8vo $9 00 



pLINN. A PRACTICAL WORKSHOP COMPANION FOR TIN, 

 D SHEET-IRON, AND COPPER-PLATE WORKERS : 



Containing Rules for Describing various kinds of Patterns 

 used by Tin, Sheet-iron, and Copper-plate Workers ; Practical 

 Geometry; Mensuration of Surfaces and Solids; Tables of the 

 Weight of Metals, Lead Pipe, etc. ; Tables of Areas and Cir- 

 cumferences of Circles ; Japans, Varnishes, Lackers, Cements, 

 Compositions, etc. etc. By LEKOT J. BLTNN, Master Me- 

 chanic. With over One Hundred Illustrations. 12mo. $250 



