I 12 



his fundamental doctrine that "gyration, caused by opposing and 

 unequal forces" acting necessarily at points remote from the axis, is 

 productive of all the phenomena in question. 



7th. In representing a " vortical, or gyratory, action"* for which 

 no source is assigned, xinless " unequal and opposing forces'"' resulting 

 from " the simple conditions of the great laws of gravitation" as 

 the proximate cause of the upward force of tornadoes ; whereas, if 

 such action be not the effect of an upward force, but is on the contrary 

 a proximate cause of the phenomena, it could only have an influence 

 the opposite of that suggested by Mr. Redfield, and which the facts 

 require. Necessarily producing a centrifugal movement in the lower 

 stratum of air, it would, by diminishing the pressure about the axis 

 of the whirl, cause the upper air, beyond the theatre of the gyration, 

 to descend in order to restore the equilibrium. 



Dr. Hare made another oral communication respecting a 

 new ethereal liquid which he had succeeded in obtaining. 



He mentioned that he had procured by means of hyponitrite of 

 soda, diluted sulphuric acid, and pyroxylic spirit, an ethereal liquid 

 in which methyl (C 2 H 3 ) might be inferred to perform the same part 

 as ethyl (C 4 H 5 ) in hyponitrous ether. Jn fact, by substituting py- 

 roxylic spirit for alcohol, this new ether was elaborated by the pro- 

 cess for hyponitrous ether, of which he had published an account in 

 the Society's Transactions, Vol. VII., Part 2. 



The compound which was the subject of his communication, had a 

 great resemblance to alcoholic hyponitrous ether, similarly evolved, 

 in colour, smell and taste; although there was still a difference suffi- 

 cient to prevent the one from being mistaken for the other. 



Pyroxylic spirit appeared to have a greater disposition than alcohol 

 to combine with the ether generated from it, probably in consequence 

 of its having less affinity for water. The boiling point appeared to be 

 nearly the same in both of the ethers; and in both, in consequence of 

 the escape of an ethereal gas, an effervescence, resembling that of 

 ebullition, was observed to take place at a lower temperature than 

 that at which the boiling point became stationary. The ethereal gas, 

 of which Dr. Hare had given an account in his communication re- 

 specting hyponitrous ether, seemed to have escaped the attention of 

 European chemists; and, even after it had been noticed by him, 



- See American Journal of Science, Vol. XXXVI. No. 1. 



