NOTICES TO CORRESPONDENTS. 



The two papers, which we learn by a letter from Professor Oersted of Copen- 

 hagen were sent to this Journal by Dr Forckhammir of Copenhagen have never 

 reached us. If Mr Feldborg, to whom they were sent, should see this notice, 

 we trust he will forward the papers without delay. 



A reply to Mr Charles Bell will appear in our next Number, together with 

 a demonstration of his errors respecting the involuntary rotatory motion of the Eye- 

 ball, a doctrine which he still persists in maintaining. 



We have received A*s very excellent set of observations made at Rome on the 

 15th January ; and also his interesting Observations on the Climate of Naples ; 

 and his Remarks on Mount Vesuvius, which will appear in next number. We shall 

 be glad to hear from him as often as convenient. 



We cannot refer our Correspondent J. R. to any work better than Mr Barlow's, 

 published in 1823, and containing all the recent discoveries on electro-magnetism. 

 He will be glad to learn, however, that a most complete account of the subject is 

 now preparing for the Edinburgh Encyclopedia, by Professor Oersted of 

 Copenhagen, the distinguished founder of this new science. It will appear under 

 the head of thermo-electricity in vol. xvii. part ii. of that work. 



We beg to acknowledge the receipt of the excellent sets of observations made on 

 he 15th January by Mr Staveley of Nottingham, Mr W. Snow Harris of Plymouth, 

 Mr Murdoch, Huntly Lodge, Mr Christison, Burdsyards, Dr Jackson, and Mr 

 Macvicar at St Andrew's, Mr W. Edgworth, Edgworthstown, the Rev. R. But- 

 ler, Trim, county of Meath, and those made at Tubingen. We trust that these 

 gentlemen and others who take an interest in such observations, will not forget 

 those on the 15th of June next. 



In answer to C.'s inquiry respecting the most complete Rain-Gage, we beg to re- 

 fer him to the very ingenious one invented by Mr Donovan, and described in the 

 Dublin Philosophical Journal. We regret exceedingly to observe that the circum- 

 stances of the times have obliged the proprietors of this excellent work to disconti- 

 nue it. It contained many original and truly valuable articles, and was conducted 

 with an honesty and candour of no ordinary kind. 



Mr Foggo's valuable paper on the Dew Point Hygrometer will appear in next 

 Number. 



The interesting papers from our esteemed Correspondent in India will appear in 

 next Number. 



%• Our Correspondents are earnestly requested to transmit their Communications 

 to the Editor before the 5th of March, the 5th of June, the 5th of September, and 

 the 5th of December. 



Authors and Booksellers who wish their Works noticed early in this Journal, are 

 requested to transmit them through the Publishers. Books of Voyages and Tra- 

 vel* are particularly requested, and will be returned when desired. 



PRINTED BY JOHN dTARK. 3^> 





