On the Modes of Ship;ping Coal. 209 



Martin's, the immediate moving power consists of two large 

 hydraulic presses, the pumps of which are worked by a 

 steam engine, and which act through the intervention of 

 connecting rods and chains upon a series of trussed frames, 

 upon which the vessel is supposed to rest. 



In the plans of the two lifting docks a good deal of 

 ingenuity has been displayed ; and I have no doubt that, 

 under certain circumstances, an adaptation of some methods 

 of hfting a vessel clear of the water analogous to these may 

 be advisable. 



In the circumstances, however, in which this colony is 

 placed, I should hesitate in advising an attempt to carry 

 out an elaborate system, which would require the perfect 

 adaptation of the different parts of the machinery to each 

 other to ensure success. 



I should very much prefer the simple construction shown 

 in the first sketch of a floating dock, where no skill is 

 required beyond what the talents of the ship-carpenter can 

 supply, and where materials of the bestquahty in the timber 

 of our forests can be cheaply and easily procured. 



XIY. 



On the Modes of Shipping Coal practised at various 



Ports in Etiglatid. By His Excellency Sir W. T. 



Denison, F.K.S., &c. &c. [Read 12th September, 



1849.] 



Having visited in the year 1846, by direction of the Lords 



Commissioners of the Admiralty, the following Coal Shipping 



Ports in the North of England, viz., Newcastle, and North 



and South Shields, on the Tyne ; Sunderland, on the Wear; 



