VI 
CONTENTS. 
PAGE 
Account of Experiments carried on at Shoeburyness, on tlie 26th June, 1862. 
Contributed by Captain E. J. Bruce, B.A. 99 
Account of Experiment carried on at Shoeburyness, on the 7th July, 1862, to 
determine the resisting powers of the “ Minotaur ” class of men-of-war. 
Contributed by Captain E. J. Bruce, B.A. 103 
On the Adaptation of the Cupola of Captain Coles to Modern Fortresses. By 
E. Duncan, M.A., Lieut. BA., Eellow of the Geological Society. 107 
Belgian Experiments on the Proof of Gunpowder in 1858, extracted from a 
Beport by Lieut.-Col. Younghusband, B.A., dated Liege, July 15th 1858. 110 
Extracts from the Beport of an Austrian Military Commission on Gun Cotton. 
Contributed by Colonel Lefroy, B.A., E.B.S. 114 
Beport on Experiments with Navez’s Electro-ballistic Apparatus. By Captain 
Noble, late Boyal Artillery... 117 
Description of Navez’s Electro-ballistic Apparatus, for determining the velocity 
of projectiles. By Lieut. W. H. Noble, B.A. 151 
Experiments which took place at Shoeburyness, on the 16th and 25th 
September, 1862; in order to test the penetrating power of the Horsfall 
Gun ... 168 
Account of Experiment carried on at Shoeburyness, on the 13th November, 
1862, with Whitworth Projectiles, fired from the same guns as those used 
during the experiments of the 16th and 25th September, 1862. Contributed 
by Captain E. J. Bruce, B.A. .. 174 
Beport of a March of a Half-Battery (“ G ” Battery, 4th Brigade), Boyal 
Artillery, from Saint John, New Brunswick, to the Terminus of the Grand 
Trunk Bailway, at Biviere-du-loup on the Saint Lawrence. February 6th to - 
16th, 1862. By Lieut. E. M. Smith, B.A. 179 
On finding the Centre of Gravity of a Gun on its Carriage and Limber, or of 
a Gun on its Carriage unlimbered. By Lieut.-Col. H. H. Maxwell, B.H.A. 207 
Cupolas and Forts. By Francis Duncan, M.A., Lieut., Boyal Artillery, 
Fellow of the Geological Society, and D.C.L. King’s College, N.S. 213 
Observations upon changes that must be introduced into Works of Defence 
to enable them to keep pace with improvements in Artillery. By Captain 
C. S. Hutchinson, B.E., Professor of Fortification, B.M.A. 219 
Account of Experiment carried on at Shoeburyness, on the 29th December, 
1862, against a Shield constructed on the principle proposed by Captain 
Inglis, B.E., representing an Iron Embrasure, for either casemated or open 
Coast Batteries. Contributed by Captain E. J. Bruce, B.A. 224 
Explanatory Statement of proceedings, and Balance Sheet of the “ Crimean 
Memorial Fund.” Furnished by Colonel Lefroy, B.A., F.B.S. 227 
On the Application of Bifled Cannon to the operation of Breaching unseen 
Defences by High Angle firing. By Colonel Lefroy, B.A., F.B.S.• 231 
Account of Experiment of 29th December, 1862, continued, on Capt. Inglis’s 
Second Shield, at Shoeburyness, 3rd March, 1863. Contributed by Capt. 
E. J. Bruce, B.A..... 253 
