INTRODUCTION. 



xi 



Photometers (Mr. Leslie's,) ........ 2 2 



Hydrometers ........ .. 3 . 1 



Hydrostatic Balances, one being the property of Mr. Fisher . 8 



Water-bottles, (Dr. Marcefs) . 2 2 



Two-feet telescopes ......... 2 . % 



Electrometers, with copper-chains 2 sets . 



Air-Pump ........... 1 



A case of chemical materials for Mr. Fisher's Experiments . 



I cannot conclude this account of our preparations without expressing 

 my sincere thanks to Sir Thomas Byam Martin, Comptroller of the Navy, 

 Commissioner Cunningham, and Captain Hill, Comptroller of the Vic- 

 tualling Depot at Deptford, for the readiness with which they acceded 

 to and even anticipated my wishes in every thing relating to our com- 

 plete equipment. To the Navy and Victualling-Boards generally I also 

 feel most highly indebted for the very obliging manner in which they 

 were pleased, on various occasions, to refer to me with a view at once 

 most effectually to execute the commands of the Lords Commissioners 

 of the Admiralty, and at the same time to consult, whenever it lay in 

 their power, the wishes of the Officer commanding the Expedition. Nor 

 can I omit to offer, on my own part, as well as that of the Officers under 

 my command, our best acknowledgments, once more so justly clue, to 

 the Officers of Deptford Dock- Yard for the kind assistance received 

 from them in those numberless minor points belonging to their seve- 

 ral departments, on which the comfort and accommodation of persons 

 employed on this service so materially depend. 



On the return of the Expedition to England the journals, charts, and 

 drawings furnished by every individual in the course of the voyage were 



b a 



