Magnetism — JV*ea> Lamp, 20T 



Caleb Atwater, Esq. of Circleville, Ohio, is engaged in 

 writing Notes on the State of Ohio, a work which is intended 

 to embrace the most important features and interests of this 

 new and rising State. 

 ! fiitir 



To this Hiiidable effort, and to that of the Western Museum 

 Society, whose address is published above, we cordially wish 

 success. From the zeal, talent, and industry of the gentlemen 

 concerned, we have every reason to expect a happy result. 



We view, with much satisfaction, the efforts which have 

 been already made, and are rapidly increasing, to bring to 

 light the resources, and to develope the history, of the western 

 States ; and it will always give us pleasure, if through the 

 medium of this Journal, or in any other manner, we can con- 

 tribute to promote them. 



Art. XXIV. Extract of a Letter from Colonel Gibbs to the 

 Editor. 



SuNswicK, June, 1818. 

 Dear Sir, 



»3INCE I saw you, I have made only one experiment on 

 magnetism. I determined the power of my magnet, as it had 

 been shut up in the dark for a long time, and lying down. I 

 then exposed it to the rays of the sun, also lying down, and 

 remote from the iron support, and I found that it had gained 

 12 oz. power in 40 minutes, and 14 oz. power only in five 

 hours. 



Art. XXV. >^ JVew Lamp, mthout Flame. 



From the Annals of Philosophy for March, 1818. Communicated by Mr. 

 Thomas Gill. 



JL HIS lamp is one of the results of the new discoveries in 

 chemistry. It has been found, by Sir H. Davy> that a fine 

 platinawire, heated red hot, and held in the vapour of ether. 



