PROCEEDINGS OF THE MEETING. XXXIU 



The Corporation of Liverpool also, at tlie suggestion of the Sub- 

 Committee, have established two sets of apparatus for the pur- 

 pose of making tide observations at Liverpool, the one at the 

 Clarence Docks, the other at the Black Rock. Mr. Yates of 

 West Dingle, and Lieut. Drummond, R.N., the director of the 

 Ordnance Survey of the coast in that neighbourhood, have given 

 much valuable aid to the objects of the Sub-Committee. 



The Committee reported on the part of the Sub-Committee 

 for superintending the reiduction of the Observations of Bradley, 

 Maskelyne, and Pond, on the Sun, Moon, and Planets, made at 

 Greenwich, (see vol. ii. p. 469.), that the reduction of these ob- 

 servations was in progress ; that the Royal Society had con- 

 tributed a copy of Maskelyne's Observations for that purpose; — 

 That the Syndicate of the University Press at Cambridge had 

 given the paper and press-work for the printed forms requisite for 

 the calculations ; — That one calculator had been employed since 

 the beginning of March, in which interval the transits have been 

 taken out of Bradley and Maskelyne; the means of the wires have 

 also been deduced, some advances made towards completing the 

 imperfect transits, and considerable progress in preparing the 

 apparent right ascensions of the fundamental stars; — that a 

 temporary stop was put to a portion of the work, in conse- 

 quence of a very severe illness with which Professor Airy was at- 

 tacked during the last summer, but that the work was again 

 proceeding with as much expedition as possible. 



The Committee reported the following Recommendations : 



1 . That it is desirable that the Constant of Lunar Nutation 

 should be deduced from observations made with the mural circle 

 at Greenwich. 



2. That it is expedient that the sum of 100/. be appropriated to 

 the purpose above mentioned by the British Association ; and 

 that Sir Thomas Brisbane, Rev. Dr. Robinson, and Mr. Baily be 

 requested to superintend the deductions. 



3. That it is desirable that the Standard Scale made some 

 years ago by Mr. Troughton for the town of Aberdeen should 

 be compared with the Standard Scale recently made for the 

 Royal Astronomical Society; and that application should be 

 made by the British Association to the magistrates of that town 

 for the loan of the same for the purpose above mentioned. 



4. That Mr. Baily be requested to make the requisite com- 

 parisons, provided the loan of the Scale can be obtained*. 



5. That the Difference of Meridians between the Observatories 

 of Greenwich, Cambridge, Oxford, Edinburgh, Dublin, and Ar- 



* The scale has been received, and is under examination by Mr. Baily. 



