142 Kirwanian Society of Diillin. 



A set of books, or a medal of five guineas value, will be given 

 annually to the author of the best dissertation on an experimental 

 subject proposed by the Society ; for which all the members, 

 honorary, extraordinary, and ordinary, will alone be invited as 

 candidates. 



The dissertations are to be written in English, French, or 

 Latin, and to be delivered to the Secretary on or before the 1st 

 of December of the succeeding year to that in which the sub- 

 jects are proposed ; and the adjudication of the prize will take 

 place in February following. 



To each dissertation must be prefixed a motto ; and this 

 motto is to be written on the outside of a scaled packet con- 

 taining the name and address of the author. No dissertation 

 will be received with the author's name affixed ; and all disser- 

 tations, except the successful one, will be returned, if desired, 

 with the sealed packet unopened. 



KIRWANIAN SOCIETY OF DUBLIN, 



Dec. 13, lSi5. A paper was read by D. Wilson, Esq. '' On 

 some Liquid Combinations of the Oxymuriatic Acid, and their 

 Application to the discharging of Turkey Red in Calico-printing." 



The Turkey red is not discharged by any of the oxymuriates 

 hitherto employed, but for this purpose oxymuriatic acid has 

 been used. This produces many inconveniences. It is highly 

 deleterious to the workmen. By acting on the metals of the press 

 employed in printing with it, black spots are occasioned in the 

 stuff, and its texture is injured. Mr, Wilson found the dis- 

 charging power of the oxymuriates to be in proportion to the 

 weakness of affinity between their constituents. Hence he found 

 oxvmuriate of alumina to answer the purpose, even in a shorter 

 time than the acid, and without any of its inconveniences. It 

 has been since pretty extensively used. He prepares it by de- 

 composing clear solution of oxymuriate of lime with solution of 

 alum. In the same manner he recommends various other oxy- 

 muriates to be prepared for the purposes of the arts, and points 

 out their application. 



May 15, 1816. A paper by M. Donovan, Esq., Secretary, 

 was read, '' On the Impurities of Hydrogen as it is commonly 

 obtained," and the experiments were repeated before the Society. 

 It is unnecessary to give any abstract of this paper, as it is in- 

 serted in full in the present number. 



LIST OF THE KIRWANIAN SOCIETY 1816. 



President. 

 Right Hon. G. Knox, F.R.S. M.R.I. A. 



Vice- 



