96 The American Naturalist. [January, 



The continuity of the Germ Plasm in Vertebrates, By title 



Carl H. Eigenmann 



Biological Stations, By title Carl H. Eigenmann 



The Eyes of Blind Fishes, By title Carl H. Eigenmann 



On the presence of an Operculum in the Aspredinidae, By title 



Carl H. Eigenmann 



Notes on Indiana Arididae. Description of one new species 



.; W. S. Blatchley 



The relation of Neucleaplasm to Cytoplasm in the Segmenting 



Egg, By title C. H. Eigenmann, K.L.Green 



Plant Zones of Arizona, By title D. T. McDougal 



Kelation of available Enzym in the Seed to Growth of the 



- Plant J- C. Arthur 



The potato Tuber as a means of Transmitting Energy, J. C. Arthur 

 Contributions to a knowledge of the grain Toxoptera (Toxop- 



tera graminum) By title F.M.Webster 



The Second Annual Meeting of the Nebraska Academy 

 of Sciences, was held at the University of Nebraska, commencing 

 Thursday, December 31, 1891. The following papers were read : The 

 President's Address : Specialization in Science. (Dr. Kingsley being 

 absent, the address was read by Dr. C. E. Bessey). The Slime Moulds 

 of Crete, A. T. Bell ; The Evolution of Oxygen by Plants, A. F. 

 Woods; Additions to the Flora of Nebraska, Prof. G. D. Swezey ; The 

 Flora of the Black Hills. Dr. C. E. Bessey; Metabolism, Dr. H. B. 

 Lowry ; A Bacterial Disease of Corn, H. B. Duncanson ; Notes on the 

 Flora of the Artesian Well at Lincoln, J. R. Schofield. The officers 

 for '92 are : President, Dr. Charles E. Bessey, Uni. Nebr., Lincoln ; 

 Vice-President, Prof. G. D. Swezey, Doane College, Crete ; Secretary, 

 W. Edgar Taylor, State Normal School, Peru ; Custodian, Lawrence 

 Bruner, Uni. Nebr., Lincoln ; Trustees, E. T. Hartley, Lincoln and Dr. 

 H. B. Lowry, Lincoln. W. E. Taylor, Sec'y. 



Iowa Academy of Sciences.— The sixth annual session was held 

 December 29, 30, 1891 at Des Moines, Iowa. The following papers 

 were read : 



Prof. C. C. Nutting— Address, "Systematic Zoology in Colleges." 



Miss Minnie Howe—" Some Experiments for the Purpose of Deter- 

 mining the Active Principles of Bread Making." 



J. E. Todd— "Striation of Rocks by River Ice." " Further Notes 

 on the Great Central Plain of the Mississippi." 



