SCIENTIFIC COMMUNICATIONS 
RECEIVED AT 
THE SOCIETY’S MEETINGS. 
February,, 1831.—A Clock of M f DowalTs construction, with spiral 
seeth instead of pinions, was exhibited and explained to the Meeting, by 
Jonathan Gray, Esq. 
March.— Notice of a simple method of measuring certain inacces¬ 
sible distancesnotice of the construction of a new perpetual Sunday 
Calendar, by the Rev. Wm. Taylor, A.M. 
On a new and very easy construction of the Dipping Needle, by 
John Phillips, F.G.S. 
Summary of Meteorological Obser rations at Ackworth, in 1830, 
by Luke Howard, F.R.S., &c. 
April.— Remarks on the materials employed at different times in 
the ancient buildings of York, by the Rev. W. V. Harcourt, F.R.S., &c. 
Observations on a specimen of the lower jaw of a didelphine 
quadruped, obtained forty years since from the Stonesfield slate, and 
presented to the Museum by the Rev. C. Sykes, by John Phillips, 
F.G.S. 
July.- —A description of the skeleton of a plesiosaurus from 
Hawsker, now in the Scarborough Museum, by John Dunn, Esq. 
Observations on an ancient leaden coffin, lately opened in York 
Minster, by the Rev. C. Wellbeloved. 
C 4 
