Proceedings of the 



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the bone has been dissolved away, and asked the essayist if he 

 had observed such a fact in the cement. Dr. Jackson replied 

 that he had never tried the experiment. 



By a vote of the Association, Mr. L. V. Fletcher was re- 

 quested to read a paper on Indian Mounds of Genesee county, 

 Michigan. (See Appendix C. ) 



A discussion of the paper here followed. 



On motion, Mr. Fletcher was requested to furnish the Asso- 

 ciation with a copy of his paper. (Many of the specimens 

 described by Mr. Fletcher are deposited in the Museum of the 

 University.) 



Prof. Merriman called the attention of the Association to the 

 report of the committee appointed by the Academy of Sciences 

 of St. Petersburg to examine the merits of a new method of pro- 

 curing the electric light. The committee, through its chairman, 

 Mr. Wilde, reported so favorably that the Academy had awarded 

 a medal to the inventor. The novel feature of the method con- 

 sists in hermetically inclosing a slender rod of carbon in a glass 

 cylinder from which oxygen is excluded, thus rendering combus- 

 tion impossible. The carbon is thus made part of the electric 

 circuit, and by its resistance becomes intensely incandescent, 

 giving out a regular, uniform light without waste of carbon. The 

 flicker and irregularity of the light, as commonly produced be- 

 tween two carbon points in air, which constitute a great objection 

 to its use, are thus obviated. 



Prof. Merriman was announced to read a paper on " Par- 

 helia " at the August meeting. 



On motion, the .Association adjourned. 



P. B. ROSE, Secretary. 



