.1S26J of the Length of tUe Pendulum at the Equator, S87 



able the Governor in Council, whether it might not be desirable 

 to have this addition- to the party.— That we had as much 

 science engaged, I imagined, as could be required ; it was, 

 theretbre, not essential that any gentleman who might go, should 

 have had a regular scientific education — a general knowledge of 

 the object of the expedition merely, with the habit of overcom- 

 ing difficulties which occur on service in the field, and a power 

 of command to keep all proceeding with it in due order, would 

 be sufficient for the purpose." 



The Honourable the Governor in Council was pleased to 

 adopt this suggestion, and to appoint Captain Crisp, of the 

 army of this Presidency, for the service. That officer, after he 

 was appointed, also attending at the Observatory, to obtain 

 information as to the mode of using the pendulum apparatus^ 

 :?» The following is a list of the instruments and articles sent 

 with the Expedition : — '■: 



One astronomical clock, gridiron-pendulum. 



One pendulum of experiment, with frame for suspending it ; 

 •arc of vibration, and small telescope. 



Two thermometers for ditto. * 



Three pocket chronometers, viz. Nos. 391 and 397, by Arnold ; 

 and a gold one, by Earnshaw. 



Three sextants, one with a stand. 

 ,: Two artificial horizons with glass covers ; quicksilver for the 

 same. ^ • 



One large telescope by Dollond, with stand, for eclipses of 

 the satellites of Jupiter. 



One portable transit instrument, with circular wooden stand. 



One theodolite and stand ; one circumferentor and stand ; one 

 azimuth compass j quilted wax-cloth covers for these instrit- 

 ments. 



One hand telescope, by Dollond. 



One barometer. 



One large perambulator. 



One brass chain, 100 feet. 



One hygrometer. 

 ' Two levelling staves, 10 feet each, with vanes. 



One plank for fixing the clock, six feet seven inches long, by 

 one foot four inches broad, and two and a half inches thick , 

 eight plugs and screws for fixing the same to the pillar. 



Ten circular plugs for fixing the frame for suspending the 

 pendulum of experiment. 

 ' One triangular stand for the barometer. 



One stand for the arc for measuring the vibrations. 



One stand for the small telescope. 

 • A canvass Observatory— camp-table, and stools. 

 . Two magnifying glasses^ ... 



