86 



SCIENCE. 



[N. S. Vol. VII. No. 160. 



Macbride, of the State University, pre- 

 siding. A goodly nuraber of scientific 

 workers of Iowa and adjoining States were 

 present, among them Professor J. E. Todd, 

 State Geologist of South Dakota; Mr. Frank 

 Leverett, of the United States Geological 

 Survejr ; Charles E. Keyes, former Assistant 

 State Geologist of Iowa and later State Ge- 

 ologist of Missouri ; Professor F. W. Sarde- 

 son, of the State University of Minnesota ; 

 Professors Calvin and Shimek, of the State 

 University ; Professors Weems, Osborn and 

 Ball, of the IState College at Ames ; Profes- 

 sors Page, Arey, Newton and Mortland, of 

 the State Normal School, Cedar Falls ; Mr. 

 E. I. Cratty, of Armstrong ; Professor T. 

 M. Blakeslee, of Des Moines College; J. L. 

 Tilton, Indianola; L. S. Eoss, Des Moines; 

 "W. S. Hendrixson, Grinnell, and others. 



' Some Geometrical Generalizations,' by 

 T. M. Blakeslee, was a discussion of a 

 method whereby a number of geometrical 

 theories could be put under one, itself a 

 special case of a more general proposition, 

 and hence more easily proven. 



In the absence of Professors Combs and 

 Pammel, papers on ' Comparative Histology 

 of Corn Leaves-' and ' Comparative Anat- 

 omy of the Fruit of Corn ' were presented 

 in summary by Professor C. E. Ball. The 

 study was undertaken to determine, if pos- 

 sible, variations of structure that could be 

 used in selection of varieties specially 

 adapted to Iowa climate. 



' Occurrence of Termes fiavipes in Iowa,' 

 by Herbert Osborn, noted the observation 

 of the white ant, so common in Southern 

 States, at LeClaire. 



In a paper by Professor C. C. Nutting, 

 ' Do the Lower Animals Eeason ? ' the 

 ground was taken that this faculty exists 

 among lower members of the animal king- 

 dom. In the discussion following the read- 

 ing a number of instances supporting the 

 views advanced in the paper were cited by 

 different members. 



Professor Herbert Osborn, in a paper, 

 'Additions to the List of Iowa Hemiptera,' 

 enumerated ninety-seven species that had 

 been hitherto unrecorded. Some of them 

 were new to science, and two species that 

 present striking mimicry and dimorphism 

 were described in detail. 



The same author, in ' Coccidse Occuring 

 in Iowa,' discussed the species of scale in- 

 sects observed in the State, giving charac- 

 teristics by which they might be recognized 

 and calling special attention to the proba- 

 bility of introduction of the San Jose Scale, 

 the means by which it is distributed, and 

 the necessity for prompt recognition should 

 it appear. 



' The Hemipterous Fauna of Northwest- 

 ern Iowa,' by the same author, presented 

 results of a collecting trip in the northwest- 

 ern counties and showing the occurrence in 

 this area of species which belong properly 

 to the plains of Nebraska and the Dakotas ; 

 also, some forms that occur normally in 

 more southern localities, but seem to follow 

 up the Missouri river ; still others that are 

 boreal in distribution, but that occur in the 

 northwestern corner, and, so far as known, 

 only in that part of Iowa. 



The President's address, by Professor T. 

 H. Macbride, of the State University, began 

 with an interesting review of scientific work 

 of the year past. Especial mention was 

 made of the contributions by Iowa scientific 

 workers, members of the Academy. This 

 was followed by a prophetic outlook on the 

 work that lies before Iowa scientific workers, 

 the speaker giving unqualified commenda- 

 tion to those researches which result in 

 practical value to mankind. 



Professor B. Shimek read a paper on the 

 ' Flora of the Sioux Quartzite in Iowa.' 

 The researches presented, which form a 

 continuation of those prosecuted in former 

 jj^ears, resulted in the addition of a number 

 of species. A comparison was drawn be- 

 tween conditions existing in June and 



