188 Wisconsin Academy of Sciences, Arts, and Letters. 



3. On the Coniferae of the Rocky Mountains, and their adapta- 

 tion to the Soil and Climate of AVisconsin. By J. G. Knapp, 



Esq., Madison. 



[Published in Transactions, p. 117.] 



The Academy adjourned until 2 o'clock P. M. 



Third Session — Communications. 



The Academy met, pursuant to adjournment, for the reading 

 and discussion of the following papers: 



4. On the Origin of the Potsdam Sandstone. By John Mur- 

 rish, State Commissioner for the Survey of the Lead Regions. 



5. On the Importance and Practicability of a Unit of Force in 

 Physics that shall be of Universal Application. By Professor 

 John E. Davies, of the Wisconsin State University. 



6. Abstract of a Paper On the Fauna of Lake Michigan off 

 Racine. By Dr. P. R. Hoy, of Racine. 



[Published in full in the Transactions, p. 98.] 



7. On the Age of the Quartzite of Baraboo. By Dr. I. A. 

 Lapham, of Milwaukee. 



In 'this paper. Dr. Lapham described the <jeological character of the country about 

 Devil's Lake, Baraboo, and presented reasons tor concluding that the Decnhar formations 

 there bhould be attributed to the action of water. 



8. On the Formation of Certain New Compounds of Manga- 

 nese. By Professor James H. Eaton, of Beloit College. 



In this paper. Professor Eaton gave an account of some exceedingly interesting origi- 

 nal investigations into the chemical properties of mangsnese, with details of the steps 

 taken iu the formation of some new compounds analagous to the yellow and red prussi- 

 ates of iron, and observations upon the physical and chemical properties of such com- 

 pounds. 



Adjourned till 8 o'clock P. M. 



Fourth and Final Session. 



The evening session was occupied mainly with an informal 

 discussion of various questions pertaining to the future of the 

 Academy, and the issuing of certificates of membership. His 

 Excellency, Governor Fairchild, was present, and took occasion 

 to express cordial sympathy with the important objects of the 

 Academy and to congratulate its members u^Don the success 

 of the present meeting. 



The Academy then adjourned sine die. 



THIRD MEETING OF THE ACADEMY. 



First Session. 



The third regular meeting of the Academy was convened in 

 the City Hall, at Milwaukee, on Tuesday, the 28th of Septem- 

 ber, at 2 o'clock P. M,; the President, Dr. J. W. Hoyt, in the 

 chair. 



