July 18, 1919] 



SCIENCE 



73 



A naturalist's glimpse of the Limherlost : Mrs. 



Ploba Mat Tuttle. 

 Seed formation in Utricularia : Robert B. Wtlie 



and Alice E. Yocom. 

 Notes on new or rare Iowa trees: B. Shimek. 



A discussion of certain rare species, chiefly of 

 the genera Quercus, Fraxinus and Carya. 

 The genits Ceanothv^ in Iowa: B. Shimek. 



A discussion of the species and varieties found 

 in Iowa. 

 Bosa pratincola Greene in Iowa: Miss Evelyn 



Ensign. 



A taxonomic and ecological discussion of the 

 common prairie rose. 

 The fern flora of NeirasTca: T. J. Fitzpatrick. 



Gives a short sketch of the seven physiographic 

 regions of Nebraska, noting the ferns found in 

 each; eight reasons are formulated to account for 

 the paucity of ferns in the state. The annotated 

 list is based upon the material in the herbarium 

 of the University of Nebraska. 

 Supplemental list of plants from southeastern 



AlasTca: J. P. Anderson. 

 Measurements of wood fiber: Henry S. Conard 



and Wilbur A. Thomas. 

 Check-list of the plants of Grinnell: Henry S. 



Conard and Frank E. A. Thone. 

 Study of a section of tiie Oregon coast flora: Mor- 

 ton E. Peck. 

 Hybridisation in Iris: Miss M. Louise Sawyer. 

 Studies upon the absorption and germination of 



wheat treated with formaldehyde. (1) Dipping 



metlwd: A. L. Bakke and H. H. Plagge. 



Chemistry 

 A chemical examination of some dolomites: 

 Nicholas Knight. 



The analysis of a number of dolomites of the 

 same geological formation, but from quite widely 

 different localities, was made to compare the chem- 

 ical composition. A specimen from Mount Ver- 

 non, Iowa, was chosen, and another from Lock- 

 port, New York, both belonging to the Niagara 

 period of the Silurian age, and their composition 

 was quite identical; also, another specimen from 

 Westchester county. New York, resembling marble 

 in physical aspects, belonging to the Cambro-Si- 

 lurian, proved quite a typical dolomite, similar in 

 composition to the others investigated. 

 The electromotive force and free energy of dilu- 

 tion of aqueous solutions of sodium bromide: 

 H. B. Hart and J. N. Pearce. 



Geology 

 Meteor mountain: David H. Boot. 

 The Aftonian gravels near Afton Junction — are 



they interglacial? George F. Kay. 

 Some large bowlders in Kansan drift in southern 



Iowa: George F. Kay. 

 A problem in municipal waterworks for a small 



city: John L. Tilton. 

 New feattures with, reference to the Thurman-Wil- 



son fault: John L. Tilton. 

 Note on conditions at the head of flood plains: 



John L. Tilton. 

 Exhibition of pictures of the tornado which passed 



through Eastern Nebraska, April 6, 1919: John 



L. Tilton. 

 The relation of the Satsop flora to the youngest 



knovin mountain range in North America: 



Ealph W. Chaney. 

 Leaohing, a factor in determining the age of gla- 

 cial gravels: Walter H. Schoewe. 

 The history of Boyer valley: James H. Lees. 

 The lowan-Wisoonsin drift border: E. J. Cable. 

 The deep well at Laurens and its interpretation: E. 



J. Cable. 

 The effect of rivers on the location of Iowa 



cities: Miss Alison E. Aitchison. 

 An illustration of the wedge-work of roots: A. O. 



Thomas. 



A large granite boulder near Nashua, Iowa, is 

 split by an elm tree fifty feet high growing in the 

 cleft. 

 The ascent of Mt. Misery on the Island of St. 



■Kitts, British West Indies: A. O. Thomas. 



Mt. Misery is an extinct, or at least a dormant, 

 volcano. A day's stop at Basseterre permitted the 

 writer and two other members of the University 

 Barbadoes-Antigua expedition to climb the moun- 

 tain. The setting of the mountain, the tree fern 

 forest on its flanks, the crater, and the view from 

 the summit are described. 

 A Herpetocrinus from, the Silurian of lovja: A. O. 



Thomas. 



Some remains of this remarkable genus of cri- 

 noids were recently collected at Mouticello. Its 

 structure, habits and geographic distribution in 

 the Silurian rocks are discussed. This is believed 

 to be the first reported occurrence of this crinoid 

 from the Iowa Silurian. 

 The Independence shale near Brandon, Iowa: A. O. 



Thomas. 



Outcrops of this formation are rare. At two or 

 three localities near Brandon, twelve to fifteen 

 miles southwest of Calvin's original exposure. 



