422 



is that the quantity which has here been called the argument 

 of probability, depends in general more simply than does the 

 probability itself on the conditions of a question ; while the 

 introduction of this new conception and nomenclature allows 

 some of the most important known results respecting the mean 

 results of many observations to be enunciated in a simple 

 and elegant manner. 



DONATIONS. 



Historias e Memorias da Academia Real des Sciencias de 

 Lisboa. Tome XII. Parte 2. 



Discurso lido em 22 de Janeiro de 1843 na sessao pub- 

 lica da Academia Real des Sciencias de Lisboa. Por J. J. da 

 Costa de Macedo. Presented by the Academy. 



Le Petit Agricultenr. Par N. C. Seringe. Presented by 

 the Author. 



Astronomical Observations made at the RadcUffe Obser- 

 vatory, Oxford, in 1840, By M.J. Johnson, Esq. Presented 

 by the Governors. 



Archives du Museum d'Histoire Naturelle. Tome III. 

 Liv. 3, et Tome II. Liv. 4. Presented by the Museum. 



Remarks on Safety Lamps. By Doctor Reid Clanny, 

 H, M. R. I. A. Presented by the Author. 



Transactions of the Royal Society of Edinburgh. Vol. 

 XV. Part 3. Presented by the Society. 



Proceedings of the National Listitution for the Promotion 

 of Science at Washington. D. C. for 1840 and 1842. Parts 1 

 and 2. Presented by Thomas Sewall, M. D., Professor of 

 Medicine in Columbia College, U. S. 



Memoirs of the Chemical Society of London for I84I-3. 

 Vol. I. Presented by the Society. 



Numismatic Chronicle. No. XXII. Presented by the 

 Numismatic Society. 



Statistical Returns of the Dublin Metropolitan Police for 

 1842, Presented by the Commissioners. 



