YlU 



Page 



Part II. Examination of the Facts and Opinions, 

 given hij different Advocates for the Volcanic 

 Origin of Basalt, who followed Mr. Desma- 

 rest; to wit, Mr. Faujas de St. Fond, Mr. 

 Dolomieu, Mr. Whitehurst, Bishop Troll, Ahbe 

 Spalanzani, and Dr. Hamilton - - - 63 

 Tart III. Arguments against the Volcanic Origin 

 of Basalt, derived from its Arrangement in the 

 County of Antrim, and from other Facts ob- 

 served in that Country - - - - 8? 



VI. On comparative Micrometer Measures. In a Let- 



ter from the Rev. Dr. J. A. Hamilton, Dean 



of Cloyne, to the Rev. J. Brinkley, F. R. S. 109 



VII. Observations on the metallic Composition for the 



Specula of reflecting Telescopes, and the Man- 

 ner of casting them : also a Method of communi- 

 cating to them any particular conoidal Figure: 

 with an Attempt to explain, on scientific Prin- 

 ciples, the Grounds of each Process: and oc- 

 casional Remarks on the Construction of Te- 

 lescopes. By the Rev. James Little - - 119 



VIII. On Space and Duration. By Richard Kinran, 



Esq. L.L.D. F.R.S. and P. R.I. A. - - 189 

 Of Duration, Time, and Eternity - - - 21.5 



IX. An experimental Enquiry into the Nature of gra- 



velly and calculous Concretions, in the human 

 Subject; and the Effects of alkaline and acid 

 Substances on them, in and out of the Body. 

 By Thomas Egan, M.D, - - - - 229 



X. Synoptical 



