200 



Mhccllanies. 



other, there was foimd in both a highly explosive mixture, which gave 

 a very sharp report when a flame was applied ; and in fact, the re- 

 sult was precisely the same as when the two tubes, standing in dif- 

 erent vessels, and furnished w^ith metallic caps and dcpendhig platina 

 wires, to connect them with the slips of the same metal below, are 

 jouied by a good conductor touching tlie caps. 

 Did the strong mechanical conflict of the 

 two opposite currents cause the gases to be in- 

 termingled, and thus to be in part carried back 

 against the stream, or did a portion of each gas 

 fail to be expelled from the tube by the attrac- 

 tions and repulsions, and thus rise by mere lev- 

 ity, to mingle with the gas appropriate to each 



? 



particular pole : 

 A, a foot 



[ty 



pint, filled with distilled water to o; through the 

 wooden top, e, are inserted the receiving tuhes, 

 B, B, which descend and rest upon strips of 

 platina, d^ d, inserted through corks at c, c; the 

 platina strips being hent at right angles, and ri- 

 sing as high as v, v, in the tubes, which are filled 

 with distilled water. — Ed. 



I 



14. Tennessee Meteorite. — This meteoric stone* which we have 

 recieved, presents a decidedly felspathic appearance 5 and is quite ho- 

 mogeneous, except its black crust and tlie small metallic particles con- 

 sisting of the protosulphuret of iron and native iron, every where dis- 



seminated through its mass. 

 Mr.S 



gravity, as ascertained by 

 Of all the stones of this sort, which have fallen 

 in the United States, it resembles the most nearly those of Maryland; 

 from, which it differs only in being of a color more nearly approach- 



ing to white. 



15. Rensselaer School Flotilla. —Th^ acting officers of the Rens- 

 selaer School, have issued notice, of a Summer Term of Travelling 

 Instruction, in this Institution. It commences on the 23d of June, 

 1830, and continues ten weeks. All persons who have previously 

 belonged to this school, or who shall enter at Troy or Albany three 

 days before the term commences, will be conveyed by a flotilla 01 

 towed canal boats to Lake Erie and returned at the end of the term 



V 



• Analyzed by Mr. Seybert,see Vol. XVII, p. 326, of (his Journal. 



y 



