May loth, 1889. 



President Nipher in tlie chair; ten members present. 



Prof. Nipher read a paper entitled "A New Discussion for 

 the performance of a Steam Engine," in which, by representing 

 horse-power, pressure and speed on 3 axes at right angles to each 

 other, he showed that their relations were correctly represented 

 by a hyperbolic paraboloid, and discussed the properties of the 

 surface. The paper was referred to the Committee on Publi- 

 cation. 



Adjourned to third Monday in October. 



September i^tk, 1889. 



On call of the President, the Academy met at S p.m. in the 

 Academy rooms to take suitable action in regard to the death of 

 Dr. A. VVislizenus, a charter member. President Nipher occu 

 ipied the chair, and there were present also Messrs. Engelmann, 

 Speck, Comstock, Trelease, Baumgarten, Hambach, and Engler. 



With the proviso that the usual formality of appointment of 

 •chairman of committees be waived in this case, Judge Speck 

 moved that the President appoint a committee of three to draft a 

 suitable memorial to Dr. Wislizenus. Seconded and carried. 



On motion of Prof. Trelease, the President of the Academy 

 was asked to serve on the committee. 



The President appointed Drs. Baumgarten and Engelmann to 

 fill the other two placess on the committee. 



October 21st, 1889. 



Vice-President Dr. Leete in the chair ; seven members present. 



Dr. Baumgarten, for the Committee appointed to draft a suita- 

 ■ble memorial in respect to the death of Dr. A. VVislizenus, re- 

 ported that the formal document- which the committee would 

 present for publication was in the hands of Dr. Engelmann, and 

 would be presented by him at the next meeting of the Academy. 

 The committee also submitted a brief memorial for incorporation 

 in the Proceedings of the Academy : 



