370 Royal Society. 



a small pamphlet to the medical gentlemen of Great Britain, 

 containing twenty-nine ingenious queries on the subject of 

 the epidemical ophthalmia, which has recently appeared in 

 the British army. This new contagion is as yet a stranger 

 in the continental armies, and the medical practitioners in 

 Germany and France seem to be unacquainted with its 

 characters. 



We are happy to find that Mr. Lc.ybourn, of the Royal 

 Military College, continues the publication of his valuable 

 Repertory of Mathematical Science. The seventh number 

 has made its appearance ; and it is but justice to add, that 

 the work has no way failed in the estimation formed of its 

 character. 



Mr. John Clennell, of Newcastle-upon-Tyne, has pub- 

 lished an Essay on the propriety of disclosing the secrets of 

 manufactories. 



LV. Proceedings of Learned Societies. 



ROVAL SOCIETY. 



J. HIS Society met on the evenings of the 14th and 22d, 

 when A. Marsden, esq., in consequence of the indisposition 

 of the president, was in the chair. A very curious paper 

 on Oxalic Acid, by Dr. 1 . Thomson of Edinburgh, was 

 read. It contained the results of a great variety of experi- 

 ments made to ascertain the relative qualities of the consti- 

 tuent parts of this acid, on a principle of calculation laid 

 down by this able chemist in the last edition of his excellent 

 System of Chemistry. It is impossible to convey any ade- 

 quate idea of the various facts detailed in this interesting 

 paper, in the present summary of the society's proceedings, 

 as Mr. Davy's illness has unfortunately prevented him froir) 

 attending the society, and the inexperience of the other 

 secretaries in reading, and their low voices, were such as to 

 render them scarcely audible. 



SOCIETV 



