200 



Miscellanies. 



other, there was found 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 with metallic caps and depending platina 

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

 joined by a good conductor touching the 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 glass of the capacity of nearly one ^^^ 

 pint, filled with distilled water to o; through the 

 wooden top, e, are inserted the receiving tubes, 

 B, B, which descend and rest upon strips of 

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

 platina strips being bent at right angles, and ri- 

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

 with distilled water. — Ed. 



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

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

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

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

 seminated through its mass. Its specific gravity, as ascertained by 

 Mr. Seybert, is 3.48. 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. — The acting oflicers 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 of 

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



■'•■ Anulyzed by Mr. Seybert, see Vol. XVII, p. 326, of this Journal. 



