SCIENTIFIC BOOKS PUBLISHED BY 



Ward s Steam for the Million. 



New and Revised Edition. 



Svo. Cloth. $1.00. 



STEAM FOE THE MILLION. A Popular Treatise on Steam 

 and its Application to the Useful Arts, especially to Naviga 

 tion. By J. H. WARD, Commander U. S. Navy. New and re 

 vised edition. . 



A most excellent work for the young engineer and general reader. Many 

 facts relating to the management of the boiler and engine are set forth with a 

 simplicity of language and perfection of detail that bring the subject homo 

 to the reader. American Engineer. 



Walker s Screw Propulsion. 



8vo. Cloth. 73 cents. 



NOTES ON SCEEW PROPULSION, its Eise and History. By 

 Capt. W. H. WALKEK, U. S. Navy. 



Commander Walker s book contains an immense amount of concise practi 

 cal data, and every item of information recorded fully proves that the various 

 points bearing upon it have been well considered previously to expressing aa 

 opinion. London joining Journal. 



Page s Earth s Crust. 



ISmo. Cloth. 75 cents. 



THE EAETH S CEUST : a Handy Outline of Geology. By 

 DAVID PAGE. 



&quot; Such a work as this -was much wanted a work giving in clear and intel 

 ligible outline the leading facts of the science, without amplification or irk 

 some details. It is admirable in arrangement, and clear and easy, and, at the 

 same time, forcible in style. It will lead, we hope, to the introduction of 

 Geology into many schools that have neither time nor room for the study of 

 large treatises.&quot; Tlie Museum. 



