April 1, 1904.] 



SCIENCE. 



527 



Molybdenite at Crown Point, Wash.: A. 



R. Crook. (Illustrated with lantern 



views. ) 



This locality furnishes the largest 

 amount of molybdenite in the country. 

 Twelve tons were produced in 1902. Min- 

 eral is found in fourteen different associa- 

 tions. 



Recent Studies in the Physiography of the 

 Ozark Region in Missouri: C. F. Mak- 

 BUT. (Illustrated with lantern slides.) 

 Field work in the Ozark region during 

 the past summer has demonstrated the ex- 

 istence of a peneplain lying at a lower level 

 than that of the so-called Cretaceous pene- 

 plain of the same region. It is probably 

 the same feature as the one described lo- 

 cally in Barry and Stone counties by 

 Hershey in 1895. This paper describes its 

 character in the south-central part of the 

 Ozark region. 



The Physiography and Glaciation of the 

 Western Tian Shan Mountains, Turke- 

 stan: W. M. Davis and B. Huntington. 

 The existing ranges of the Tian Shan 

 Mountains in central Turkestan result 

 from the elevation and greater or less dis- 

 section of a more ancient mountain system 

 that had been previously subdued or worn 

 down to small relief over a large area. The 

 elevation of the old-mountain region was 

 accomplished in part with moderate de- 

 formation, in part with strong block-fault- 

 ing. Local glaciation in several successive 

 epochs is clearly recognized. 



A System of Keeping the Records of a 

 State Geological Survey : E. R. Buckley. 

 Two classes of inquiries are received by 

 a state geological survey, viz., (1) The min- 

 eral resources of a particular section of 

 land and (2) the occurrence of a certain 

 resource in a particular county. To an- 

 swer these inquiries requires the collection 

 and storing of a vast amount of informa- 



tion. The collecting of this information is 

 gradually carried on by the usual field 

 work of the survey and correspondence. 

 The storing of this information in such a 

 manner as to make it easily accessible is 

 brought about by an adoption of the card 

 catalogue system. A location case and a 

 subject ease are provided in which all data 

 relating to the mineral resources of the 

 state are recorded. 



The Tectonic Geography of Southwestern 

 New England and Southeastern New 

 York: William Herbert Hobbs. (Il- 

 lustrated with lantern slides.) 

 The paper discusses the important ele- 

 ments in the architecture of the earth's 

 crust within the province designated, as a 

 result of extensive surveys made for the 

 U. S. Geological Survey. A number of 

 'key areas' were selected having regard 

 both to the intricacy of their structure and 

 to their distribution within the province, 

 and studied with much detail. The struc- 

 tural elements characteristic of the indi- 

 vidual areas were then compared and their 

 relationship to the broader structural lines 

 of the province as a whole considered. So 

 far as possible the essential facts were set 

 forth by means of maps projected upon 

 the screen. 



The Lineaments of the Eastern United 

 States: "William Herbert Hobbs. (Il- 

 lustrated with lantern slides.) 

 This paper is an extension of the investi- 

 gation upon the tectonic geography of por- 

 tions of New England and vicinity, with a 

 view to determining whether structures 

 found to characterize that province are 

 common to the larger regions as well. The 

 materials of the study have been the topo- 

 graphic maps of this region and the pub- 

 lished works of other geologists, the meth- 

 ods of examination and the point of view 

 being, however, new. 



