722 



SCIENCE 



[N. S. Vol. XXVII. No. ( 



fessor W. S. Bayley was elected secretary 

 of the section for the meeting in the ab- 

 sence of the regular secretary, Professor 

 W. H. Hobbs was elected member of the 

 general committee, Professor U. S. Grant, 

 member of the council, and Mr. F. B. Tay- 

 lor, member of the sectional committee for 

 five years. 



At the business meeting of the sectional 

 committee held on Wednesday, January 1, 

 Mr. Bailey Willis, of Washington, was 

 nominated for viee-president of the asso- 

 ciation and chairman of the section, and 

 Dr. P. P. Gulliver was named for secretary. 

 At this same meeting also the names of 

 about fifteen members were presented to 

 the council with the recommendation that 

 they be elected as fellows. Professor 

 Charles R. Dryer was nominated as dele- 

 gate from Section E to the Ninth Inter- 

 national Geographic Congress, to be held at 

 Geneva in July next. 



Since the address of Vice-president Lane 

 had already been read at the summer meet- 

 ing of the section (Science, August 2, 

 1907, pp. 129-143) all of the sessions at 

 Chicago were devoted to the presentation 

 and discussion of papers, of which 31 were 

 read in full. The abstracts of these follow : 



The Bed Sandstone Series of Southeastern 

 Minnesota: C. W. Hall, Minneapolis, 

 Minn. 



Records of deep and artesian wells 

 drilled in southeastern Minnesota for 

 twenty years past have shown the exist- 

 ence of an apparently widely distributed 

 sandstone beneath the overlying and non- 

 aquiferous beds. Drillings to the granite 

 rocks in several localities indicate a thick- 

 ness of from 100 feet to 300 feet for this 

 formation, and place it directly upon the 

 basal granite rocks of this region. The 

 paper correlated the scattered data with 

 the view to establishing the existence of a 

 well-defined sandstone series at this horizon. 



Preliminary Account of the Geology of the 



Highlands of New Jersey: W. S. 



Baylet, Urbana, lU.'' 



The Highlands of New Jersey are a part 

 of the series of ridges of pre-Cambrian 

 rocks that extend southwestward from the 

 Hudson River to Reading in Pennsylvania, 

 They have long been described as being 

 composed of parallel layers of limestone 

 and gneiss, and, principally, because of 

 their association all of the rocks have been 

 regarded as metamorphosed sediments. 

 Recent observations have shown that the 

 limestone is one member of a well-defined 

 series of fragmental rocks of pre-Cambrian 

 age, and that the gneisses are igneous rocks 

 that have intruded these. The parallel 

 arrangement of the rocks is due to the fact 

 that the intrusive rocks invaded the old 

 sedimentary series along their bedding 

 planes. The structure of the gneiss is 

 thought to be the result of flowage, by 

 which some of their components have been 

 strung out in line. 



The complex gneisses and sedimentary 

 rocks have been broken into blocks by great 

 longitudinal faults, which almost invari- 

 ably occur in the southeast sides of the 

 gneiss ridges, separating them from the 

 northwest sides of narrow longitudinal val- 

 leys underlain by Paleozoic rocks. One of 

 the largest of these faults limits the High- 

 land area on the south and separates it 

 from the Piedmont plateau. Cross faults 

 of comparatively small magnitude run 

 nearly perpendicularly to the structure of 

 the region and cause slight displacements 

 in the interlaminated gneisses. They are 

 of especial importance in connection with 

 the magnetite mines, since they cause dis- 

 placements of the ore bodies. 



These generally consist of rich magnetic 

 phases of the gneisses and like them are 



' By permission of tlie director of the U. S. 

 Geological Survey. 



