SYNOPSIS OF PROCEEDINGS. 281 



A paper was read from Prof. E. L. Berthoud of the School of Mines, 

 Colorado, on ''The ReLiiscovery of an Ancient Turquoise Mine in 

 Arizona." 



March 18, i8Sp. — Trustees' Meeting. 



^^ President McCowen in the chair; eight members present. 



The meeting was called to receive the report of the committee ap- 

 pointed January 21 to devise plans for the, furtherance of scientific 

 work in the Academy. The report of the committee recommended ^- 



(i.) The utilization of the material of the museum, by means of 

 illu^-trative collections from its shelves, for the instruction of students 



from the publ"' srhmik nnd <ithf-r^ in file \,iriniK 1 irnnrlie.; of SrieilCe; 



and — 



(2.) Increasing the usefulness of the Library by the preparation 

 and publication of a catalo;4ue or list of its contents. 



The first recommendation had already, since the appointment of the 

 committee, been put into successful operation by the Curator without 

 waiting for the assured approval of the trustees. By arrangement 

 with the Superintendent and principals of the public schoolsy twelve 

 classes, comprising all of the eighth and ninth grades — 432 pupils in 

 all — had during the past three weeks spent each tlie last school hour 

 of one afternoon at the Academy, deeply interested in the study of 

 comparative anatomy, as shown in "The. Teeth" of various animals 

 in the Museum. The High School classes would follow soon, and the 

 next subject taken up would probably be "The Mound Builders and 

 Their Works." The report was received and the Curator's work was 

 approved. * 



After much discussion it was decided to discontinue the work of 

 thunderstorm observations, notifying observers to that effect by circu- 

 lar letter, and leaving to the United States Signal Service, which has 

 just established a special system of observations in Iowa, .the publica- 

 tion of data obtained. 



March 2g, iSSg. — Regular Meeting. 



President McCowen in the chair; six members present. 

 The reception, by exchange from Prof. O. W. Collett of St. Louis, 

 of some flint implements from the Osage region was reported. 



Prof. W. H. Pratt read an interesting paper on "A New Process of 



*A detailed statement, by Prof. Pratt, of his work in this direction, will be found in the 

 minutes of June 13, 1890.* 



