GO NT Bene T S, 
VIII. Defcription of a felf-regiftering Barometer. By the 
Rev. Arthur Maguire, communicated by the Rev. 
Matthew Young, D.D. 8.F.T.€.D. and M.R.I. A. Page 141 
IX. A Method of cutting very fine Screws, and Screws 
of two or more Threads, &c. By the Rev. Gilbert 
Auftin, A.M. and M.R.L A. - - - 
X. An Attempt to determine with Precifion fuch Injuries 
of the Head as neceffarily require the Operation of the 
Irephine. By Sylvefter O’ Halloran, Efq; M.R.I. A. 
and Honorary Member of the-Royal College of Surgeons 
zn Ireland - os = i J 2 
XI. Demonjftration of Newton's Theorem for the Correction 
of Spherical Errors in the Objet Glaffes of Telefcopes. 
By the Rev. Matthew Young, D.D. 8S. F.T. C.D. 
and MRL. A. - - = “ 2 
XI. Account of a fiftulous Opening in the Stomach. By 
George Burrowes, M.D. and MR. A. - -. 
XII. Cafe of an enlarged Spleen. By the fame - — = 
145 
151 
171 
Ue 
