ADMIRALTY INSTRUCTIONS. 11 



Promontory to Cape Portland. This survey will, 

 of course, comprehend the approach to Port Dal- 

 rymple, but the interior details of that extensive 

 harbour may be left to the officers employed by the 

 Lieutenant-Governor of Van Diemen's Land, pro- 

 vided you can ascertain that it is his intention to 

 employ them there within any reasonable time. 



'' The number of vessels which are now in the 

 habit of passing through Bass Strait, and the doubts 

 which have recently been expressed, not only of the 

 just position of the dangers it is known to contain, 

 but of the existence of others, show the necessity of 

 this survey being executed with that care and 

 fidelity which will give confidence to all future 

 navigators ; and may, therefore, be more extensive 

 in its limits, and occupy a larger portion of your 

 time than is at present contemplated. You must 

 exercise your own judgment as to the fittest period 

 at which you should either repair to Sydney to 

 refit, or adjourn to Port Dalrymple to receive 

 occasional supplies. Whenever this branch of the 

 service shall be completed, you are forthwith by a 

 safe conveyance to transmit a copy of it to our 

 Secretary, that no time may be lost in publishing it 

 for the general benefit. 



" At Sydney you will find the stores which we 

 have ordered to be deposited there for your use, 

 and having carefully rated your chronometers, and 

 taken a fresh departure from the Observatory near 

 that port, and having re-equipped His Majesty's 



