40 THE VOYAGE OF H.M.S. CHALLENGER. 



5. In the event of any unforeseen circumstance, rendering it necessary for you to leave the Expedition, and 

 return to England hefore its final conclusion, it is their Lordship's desire that you should place Captain Nares 

 in full possession of your views and opinions in regard to the further prosecution of the scientific ohjects of the 

 voyage, and that the Scientific Staff should in such an event continue their investigations under his directions. 



I am, Sir, 



Your obedient Servant, 

 Professor Thomson, F.R.S., Robert Hall. 



Regius Professor of Natural History 



at the University of Edinburgh. 



Professor Thomson's Appointment, 



Admiralty, hit October 1872. 

 Sir, — I am commanded by my Lords Commissioners of the Admiralty to acquaint you that, having decided 

 to despatch H.M.S. " Challenger " on a Circumnavigating "Voyage of Scientific Research and Exploration, and 

 hearing from the President and Council of the Royal Society that you are willing to afford your services on 

 such a voyage : They have been pleased to appoint you Director of the Scientific Civilian Staff of the Expedition, 

 giving you the control and superintendence in all matters relating to the scientific duties of the gentlemen who 

 have been appointed to assist you. 



2. Your own salary while employed on this service will be £1000 per annum, and the names and salaries of 

 the gentlemen associated with you who have been approved by yourself and recommended by the President and 

 Council of the Royal Society are as follows, viz.: — 



Mr. J. J. Wild, Artist and Secretary, ..,,,. £400 



Mr. Henry Nottidge Moseiey, B.A, Naturalist, . 200 



Mr. John Murray, Naturalist, . 200 



Mr. John Young Buchanan, M.A., Chemist and Physicist, . . . 200 



Before the ship's final departure from England, their Lordships will cause you to be furnished with such 

 memoranda and instructions as they may deem necessary for your guidance while employed on this service. 



It is requested that the receipt of this letter be acknowledged. 



I am, Sir, 



Your obedient Servant, 



Professor Wyville Thomson, F.R,S., Robert Hall. 



&c, &c, &c. 



Appointment of other Members of the Scientific Civilian Staff. 



Admiralty, 1*/ October 1872. 

 Sir, — I am commanded by my Lords Commissioners of the Admiralty to inform you that they have been 

 pleased to appoint you Chemist and Physieist in the Expedition about to proceed on a voyage of scientific 

 research in H.MS. "Challenger." 



"While employed on this service, it is expected that you will perform your duties under the superintendence 

 of Professor Wyville Thomson, F.R.S., who has been appointed Director of the Scientific Civilian Staff, and 

 that you will conform to the usages and customs observed on board Her Majesty's ships. 

 Your salary while so employed will be (£200) two hundred pounds per annum. 



I am, Sir, 



Your obedient Servant, 

 John Young Buchanan, Esq. Robert Hall. 



Dr. R. von W. Suhm, Mr. Moseiey and Mr. Murray, received appointments as Naturalists similar to the 

 above, with the same salary ; and Mr. Wild an appointment as Secretary to the Director, and Artist, with a salary 

 of £400 per annum. 



