1898.] SCIENTIFIC PROCEEDINGS. 269 



infusible in the blowpipe flame, but turning opaque ; specific gravity 

 2.67. Its analysis gave 



Si„ O 93-73 ^IgO 26 



A1,0, 2.46 SO3 2.77 



FeO 42 H^ O 37 



CaO 48 



100.49 



Mr. Davison also announced the discovery of 



PLATINUM AND IRIDIUM IN METEORIC IRON.* 



From 608.6 sfms. of Coahuila meteoric iron there was obtained 

 0.014 gms. of platinum, and 0.0015 gms. of iridium. From 464 gms. 

 of Toluca meteoric iron were obtained a few crystals of potassium 

 platinichloride which showed the reddish color due to the presence of 

 iridium. 



October 25, 1898. 



The meeting was held at the Reynolds Library, President 

 Fairchild in the chair; thirty-one persons present. 



Dr. M. a. Veeder, of Lyons, N. Y. , a corresponding member 

 of the Academy, read a paper entitled 



THE SPREAD OF TYPHOID FEVER AND KINDRED 

 DISEASES BY FLIES. -^^^ 



November 22, 1898. 



The meeting was held at Anderson Hall, President Fairchild 

 in the chair; seventy-nine persons present. 



The lecture of the evening was given by Mr. John S. Shearer, 

 Department of Physics, Cornell University, and was entitled : 



WAVE THEORY IN MODERN PHYSICS. 



The lecture was illustrated by experiments. A vote of thanks 

 was given the lecturer. 



♦The paper is printed in American Journal of Science, IV. Vol. 7, 1899, P- 4- 



**A prodrome of this paper entitled " Hies as Spreaders of Sickness in Camps," appeared in 

 the Medical Record of September 17, 1898. 



