XI. APPLICATIONS. 327 



APPLICATION TO NAVAL AND MILITARY PURPOSES. 



1710. Military Morse Direct Indicator, for Field Service. 



S. M. E., Chatham. 



1711. Military Morse Field Sounder. 



S. M. E., Chatham. 



1711a. Military Telegraph. 



M. Trouve, 6, Rue Therese, Paris. 



This apparatus is characterised by the junction into one single object of the 

 three parts which constitute a telegraphic post, viz., the monitor, the manipu- 

 lator, and the reflector ; and also by the smallness of its size, -which enables 

 a man to carry it on his back, with its cable, like a soldier's knapsack. To 

 this apparatus are adjoined four time-pieces ; the two first are tellers trans- 

 mitting the despatch by sound. The two others have dials, movable and 

 printed on both sides ; the one has letters and figures, the other letters only, 

 with blanks for tracing words, which allows of orders being sent as rapidly as 

 by word of mouth. 



FUZES. 

 (a.) WIRE OR Low TENSION ELECTRICITY FUZES. 



1712. Earliest form of Fuze used by the Royal Engineers 

 for the explosion of mines by electricity (first used in removing the 

 wreck of the " Royal George," Spithead, 1839). 



F. A. Abel, F.R.S. 



1713. Mining Fuze, platinum wire, improved construction 

 by Chemical Department, Woolwich. Wire, '008 inch in dia- 

 meter (Abel's electric fuze, No. 1). F. A. Abel, F.R.S. 



1714. Detonators, platinum wire, Chemical Department, 

 Woolwich. Wire, '003 inch diameter. F. A. Abel, F.R.S. 



1715. Detonator (low tension), latest construction, with 

 bridges of platinum-silver or indie-platinum wire (*0014 inch in 

 diameter). F. A. Abel, F.R.S. 



1716. Statham and Brunton's Fuze, 1854. Composition, 

 sulphide of copper and fulminate of mercury. F. A. Abel, F.R.S. 



1717. Von Ebner's Fuze, 1867 (earliest fuzes constructed 

 by Von Ebner about 1855). Composition, coke, sulphide of anti- 

 mony, and chlorate of potash, primed with gunpowder. 



F. A. Abel, F.R.S. 



1718. Abel's High Tension Fuze, 1858. Composition, sub- 

 phosphide of copper primed with gunpowder. F. A. Abel, f.R.S. 



