xlvi 



A gift of a large number of medical journals from Dr. Alt was 

 acknowledged by a vote of thanks. 

 [ Adjourned until the third Monday in October. 



October loth, 1890. 



'' President Nipher in the chair ; thirteen members present, also 

 four visitors. 



A gift from Prof. Pritchett of a framed copy of an artotype re- 

 production of a crayon drawing made from the negatives of the 

 sun's corona taken by the Washington University Eclipse Party 

 at Norman, California, January ist, 1889, was formally accepted 

 by the President and acknowledged by a vote of thanks. 



Mr. A. S. Hitchcock read extracts from his paper entitled "A 

 Catalogue of the Anthophyta and Pteridophyta of Ames, Iowa." 

 Referred to the Council for publication. 



Prof. Nipher read a paper entitled "Surface Integrals in Me- 

 teorology," in which the total rainfall over the whole United 

 States in cubic feet per second was given for each month in the 

 year. The values were the means of ten years ending January, 

 iSSo. Referred to the Council for publication. 



A paper was read by Mr. J. C. Duffey on "Transformations of 

 a Carabid {Ploc/iionus ti/iiidus)^ and Observations on three En- 

 emies of the Red Spider." Referred to the Council for publi- 

 cation. 



November 3<f, 1890. 



President Nipher in the chair ; eleven members present. 



In the absence of the Recording Secretary, Mr. H. A. Wheeler 

 was elected Secretary pro tern. 



Prof. Nipher presented a communication on the "Friction of 

 Engines," illustrating his remarks by a model. 



Dr. Todd made some observations on an interesting occurrence 

 of the loess near Carson, in St. Louis county. 



Dr. Wellington Adams exhibited a special form of milli- 

 ampere metre designed for the use of physicians. 



