298 



limits of the electric nervo-muscular sensibility, refused to make a trial 

 of their mechanical power, as determined by the dynamometer. 



I had made similar experiments in former years, and it gives me 

 pleasure to be able to add that they are in harmony with nature's ar- 

 rangement. Thus, in my investigations which were published in the 

 Comptes Rendus of the Academy of Sciences of Paris, for 1852, I 

 met with this co-relation, viz: in the exhaustion of the mechanical 

 power being accompanied by the exhaustion of the electrical jbrce; 

 and, conversely, in the increase of mechanical power being always 

 accompanied by that of the electric force. 1 have not, however, de- 

 termined as yet, in degrees, the relative amount of this exhaustion 

 and increase. 



By the apparatus of Dubois Raymond, we obtain, at length the 

 sharp in fa of the tonic 524, which gives 728 compound, or 1456 

 simple vibrations, representing the number of magnetizings and their 

 withdrawals or abstractions in a second of time. Temporary mag- 

 netizings, however, coupled with acoustics, may form a powerful means 

 of measuring the minutest fractions of time, the like of which is not 

 procured from common pendulums. We wait impatiently for the 

 apparatus of the ingenious mechanician Hipp, of Berne. 



The reporter for the Proceedings of the Society laid upon 

 the table No. 58, recently published. 



The unfinished business of the last stated meeting being 

 under consideration, it was agreed that a Committee of seven 

 members shall be appointed by the presiding officer, to revise 

 the laws of the Society relative to the duties of Treasurer and 

 Librarian. 



Stated Meeting, March 1 9. 

 Present, twenty members. 



The Vice-Presidents being absent. Dr. William Harris 

 was called to the chair. 



Letters were read: — 



From the Horticultural Society of London, dated February 

 2, 1858, returning thanks for Vol. XI. Part 1, of the Transac- 

 tions of this Society: — 



From the Connecticut Historical Society, dated Hartford, 



