180 



SCIENCE. 



[N. S. Vol. XVir. No. 422. 



of the alloy whicli should have the least 

 coefficient of expansion. The results are 

 given in the following table: 



Sulphur Dioxide and the Binary-Vapor 

 Engine: R. H. Thurston, Cornell Uni- 

 versity. 



A New Apparatus for Demonstrating 

 Wave Motion: Fred. J. Hillig, St. 

 John's College. 



The instrument is used to demonstrate 

 the theory of radiation, particularly the 

 different wave-forms (longitudinal and 

 transversal), polarization and diffraction. 

 The apparatus consists of a network of 

 rubber strings, at the intersection of which 

 lead balls are suspended. 



Demonstration of a Portable High Tension 



Coil and Ozone Generator: G. Lenox 



Curtis, New York city. 



For several years I have been experi- 

 menting with a high tension coil which is 

 attached to the street main of 110 or more 

 volts. The current is multiplied to one 

 million volts, while the amperage is re- 

 duced to a fraction of one ampere. The 

 object of the apparatus is to produce ozone 

 for therapeutical purposes. It apparently 

 has but a single pole, the atmosphere being 

 the negative pole. 



To the coil are attached ozone genera- 

 tors, inhalers, Geisler and X-ray tubes. 

 The apparatus is portable and can be used 

 wherever there is an incandescent current, 

 or. the current may be supplied from a 

 battery; it is, therefore, adapted to sick- 

 room practice. The current and ozone, 

 by this device, may be carried into and 

 through the body, oxidizing pathogenic 



conditions, reestablishing nutrition, and 

 restoring the blood to norraal. There is 

 no shock nor unpleasant feeling to the 

 patient. This method as demonstrated by 

 five years' active practice, in which many 

 diseases have been treated, is probably the 

 most effective of any now in vogue. It 

 appears to be equally advantageous in the 

 treatment of acute and chronic eases. It 

 quickly reduces fevers, controls pneumonia 

 and diseases of suppurative character, and 

 increases vitality. By passing the elec- 

 trode over the body, superficial and deep- 

 seated congestions may be located, and 

 within an unusually short period normal 

 circulation is reestablished. This fact has 

 been demonstrated in the treatment of 

 meningitis, pneumonia, tuberculosis, neu- 

 ritis, etc., and the long chain of affections 

 arising from autointoxication is virtually 

 controlled. Sufficient ozone can be gener- 

 ated by this device to quickly disinfect the 

 sickroom or hospital ward. 



Dayton C. Miller, 

 Secretary of Section B. 



MEETING OF THE AMERICAN PHYSICAL 

 SOCIETY. 



On Wednesday, December 31, a joint 

 meeting of Section B and the American 

 Physical Society was held, at which Pro- 

 fessor A. G. Webster, vice-president of the 

 society, presided. The annual election re- 

 sulted in the choice of the following officers 

 for the current year : 



President — Arthur G. Webster. 



Vice-President — Elihu Thomson. 



Secretary — Ernest Merritt. 



Treasurer — William Hallock. 



Mernbers of the Council — W. F. Magie and E. 

 H. Hall. 



The first paper on the program was by 

 Dr. L. A. Bauer, 'On the Results of Com- 

 parisons of Magnetic Instruments.' These 

 comparisons had been made by the mag- 

 netic survey and showed a very satisfac- 

 tory agreement among the different instru- 



