The stated meeting of the Section was called to order by the President at 8.IO P.M, There were present fifty-seven members and visitors. The minutes of the previous meeting were read and approved. The treasurer reported a balance of $36.91 in the treasury, and presented bills amounting to $IO.32, which were ordered paid.
The meeting was then informally adjourned to allow the members to see the working of the telautograph, the recently perfected invention of Prof. Elisha Gray. The meeting was called to order again at 9.I5. A committee, composed of-Prof. E. J. Houston and the President, was appointed to endeavor to secure Prof. Elihu Thomson to show before the Electrical Section some results of his most recent work.
The President and Mr. Carl Hering were appointed a committee to pro. vide for lunches at the next two meetings.
Mr. C. Billberg presented two curves taken from one of his sixty-five horse-power motors, illustrating the influence of the iron wire wound over the whole surface of the armature. The one was platted from a test before the iron wire was put on, and the other after, the latter showing a gain of about ten to eleven per cent. in E. M. F., with lhe armature making in both cases 665 revolutions per second, and having the same field excitation.
Mr. Willyoung showed some interesting experiments with Crookes tubes. The paper, by Messrs. Willyoung and Northrup, on "Some Methods of Varying the Sensibility of Galvanometers," was referred for publication,
The meeting tben adjourned.