D. VAN JSTOSTBAND. 21 



Sabine's History of the Telegraph. 



lamo. Cloth. $1.25. 



HISTOET AND PEOGEESS OF THE ELECTEIO TELE- 

 GEAPH, with Descriptions of some of the Apparatus. By 

 BoBEBT Sabiste, C. E. Second edition, ■with additions. 



Contents. — I. Early Observations of Electrical Phenomena. U. Tele- 

 graphs by Frictional Electricity, m. Telegraphs by Voltaic Electricity. 

 IV. Telegraphs by Electro-Magnetism and Magneto-Electricity. V. Tele- 

 graphs ■aow in use. VI. Overhead Lines. VII. Submarine Telegraph Lines. 

 Vin. Underground Telegraphs. IX. Atmospheric Electricity. 



Haskins' Galvanometer. 



Pocket form. lUuBtrated. Morocco tucks. $3.00. 



THE GALVANOMETUE, AND ITS USES; a Manual for 

 Electricians and Students. By C. H, Haskins. 



" We hope this excellent little work will meet with the sale its merits 

 entitle it to. To every telegrapher who owns, or uses a Galvanometer, or 

 ever expects to, it will be quite indispensable." — The Telegrapher. 



Culley's Hand-Book of Telegraphy. 



8vo. Cloth. $0.00. 

 A HAND-BOOK OF PRACTICAL TELEGRAPHY. By 

 R. S. Cl^LLEY, Engineer to the Electric and International 

 Telegraph Company. Fifth edition, revised and enlarged. 



Foster's Submarine Blasting. 



4to. Cloth. $3.50. 



SUBMARINE BLASTING in Boston Harbor, Massachusetts— 

 Eemoval of Tower and Corwin Eocks. By John G. Fosteb, 

 Lieutenant-Colonel of Engineers, and Brevet Major-General, U. 

 S. Army. Illustrated with seven plates. 



List op Plates. — 1. Sketch of the Narrows, Boston Harbor. 2. 

 Townsend's Submarine Drilling Machine, and Working Vessel attending. 

 3. Submarine Drilling Machine employed. 4. Details of Drilling Machine 

 employed. 5. Cartridges and Tamping used. 6. Fuses and Insulated Wires 

 used. 7. Portable Friction Battery used. 



