138 TRANSACTIONS OF THE [aPR. 7, 



interesting and well-chosen experiments, slight deflections of 

 the galvanometer being projected on tlie screen. The incandes- 

 cent system of lighting used in the lecture-room was in opera- 

 tion during the lecture, and the lantern was illuminated by an 

 arc light. Dr. Laudt and Mr. Pellew ably assisted Prof. 

 Chandler in the experiments. At the close of nearly two hours 

 a vote of thanks was unanimously given to Prof. Chandler by 

 members of the Academy and their friends. After the lecture 

 the working model of the Edison lighting system was on exhi- 

 bition in the Chemical Museum. 



April 7, 1890. 

 Lecture Evening. 

 The President, Dr. Newberry, in the chair. 

 Twenty-five persons present. 

 Prof. D. S. Martin read by title the following paper: 



A REMARKABLE GROUP OF METEORITES FROM KIOWA COUNTY, 



KANSAS. 

 BY GEORGE F. KUNZ. 



This paper will appear later in the Transactions. 



Mr. Byron B. Goldsmith was proposed as a Resident Mem- 

 ber of the Academy by Edward Gudeman. 



The President then introduced Dr. Michael I. Pupin, 

 who read a very interesting paper entitled 



THE relation OF CERTAIN THERMO-DYNAMICAL PHENOMENA 

 OF LIQUID SOLUTIONS TO THE ECONOMY OF NATURE.' 



At the close of this very interesting paper there was some dis- 

 cussion by the President, Dr. Britton, and others. 



' On account of other pressing engagements, the author has been un- 

 able to furnish the editor with an abstract of this very interesting and 

 important paper in time for publication in the current number of the 

 Transactions. The abstract of this article, with discussion, will ap- 

 pear in the May number. 



