regard to its Defence. 215 



powerful guns, which are considered the best for distant 

 ranges against shipping, &c. This would give us three 

 batteries of eight guns each, or four of six guns. In addi- 

 tion to these are two small mortars and two light six- 

 pounders (field pieces) ; there are also other iron guns, 

 most of which are condemned, but they might at any rate 

 be used to instruct beginners in practice, and as models, 

 should it be found requisite, to cast guns here. 



The next questions are, what are the best situations as sites 

 for defensive works, then what style of works should be con- 

 structed on those sites ? 



Beginning at the Harbour we find three good situations, 

 viz. ; — The place overlooking the present Battery, now 

 occupied by the shipping signal-staff — that point in the Do- 

 main commonly called " Macquarie Point"* — and Kangaroo 

 Bluff: on the first two of these, batteries, and on the 

 third a closed work, should be formed. {Vide Plate I.) 

 By glancing at the plan it will be seen how works placed in 

 these situations mutually support and defend each other. 



Lower down the Paver we have Sandy Bay Point, a good 

 situation for a fourth battery. I submit that a battery upon 

 this point, having as a citadel of retreat a substantial closed 

 work constructed on a convenient spur of Mount Nelson, so 

 as to command the Brown's River Eoad, would form the best 

 disposition of works here. 



Just below Kangaroo Bluff is a low sandy point, upon 

 which a martello might be erected, or a similar work, to 

 prevent the enemy landing in the bay below. 



Thus far have we traced works down the Paver, and I 

 presume that any erected further down would come more 



* Since this Paper was read, Batteries mounting heavy guns haTe been con- 

 sti'ucted on both these commanding sites. — Ed. 



