970 



SCIENCE 



[N. S. Vol. XXXIII. No. 860 



Library of the British Museum," but we do 

 not know of a copy in this country. "We shall 

 be glad to be informed if there is a copy in 

 an American library. Mary 6. Lacy 



Bureau op Plant Industry, 



U. S. Bepastment of Agriculture 



TEEBESTSIAL MAGNETISM 

 The results of magnetic observations made 

 by the Coast and Geodetic Survey between 

 July 1, 1909, and June 30, 1910, have recently 

 been printed at the Government Printing 

 Office in Washington. The report is edited by 

 E. L. Faris, Inspector of Magnetic Work; 

 assistant. Coast and Geodetic Survey. The re- 

 port includes the values of the three magnetic 

 elements as measured during the fiscal year, at 

 two hundred and thirty-two stations on land 

 distributed through thirty-nine states and ter- 

 ritories. Several other land stations were oc- 

 cupied and partial results are given for these. 

 Of this number, seventy-five were " repeat " 

 stations, nearly one third of the whole number. 

 " The resulting values of annual change show 

 that, as compared with 1905, west declination 

 is increasing more rapidly in New England 

 and the Middle States and east declination is 

 increasing more rapidly in the western part of 

 the country. The position of the line of no 

 change is apparently about the same as in 

 1905." The year 1905 is doubtless referred to 

 because to that year the last and most com- 

 plete declination charts yet printed for the en- 

 tire country were uniformly reduced. The 

 results of a considerable number of observa- 

 tions at sea are given in this report. In con- 

 nection with the land work, the continuous 

 records of the magnetic observatories, five in 

 number, were available, except for the time 

 during which the instruments of the observa- 

 tory at Baldwin, Kans., were being removed to 

 Tucson, Ariz., the observatory at the former 

 place being discontinued in October, 1909, and 

 a new one established at the latter in ISTovem- 

 ber, 1909. F. A. Molby 



Cornell University 



" Rieu, • ' Catalogue of the Persian Mss. in tlie 

 Library of the British Museum," 1879, Vol. 1, 

 pp. 96-97. 



SPECIAL ASTICLES 

 REDISCOVERY OF SOME CONRAD FORMS 



T. A. Conrad in " Description of Cretaceous 

 and Tertiary Fossils," published in part two 

 of the Eeport on the United States and Mex- 

 ican Boundary Survey, describes and figures 

 the following cretaceous forms collected by 

 Arthur Schott, ascribing them to the localities 



Mactra texana, 



Cardium congestum, 

 Bostellariaf collina, 

 Rostellaria? texana, 

 Natica collina, 

 Naiica texana, 

 Buccinopsis parryi, 



Prairie between La- 

 redo and Rio 

 Grande City. 



Devils River. 



Between Devils River 

 and the Pecos. 



The first-named locality is in the Eocene 

 and at the others only rocks of Fredericks- 

 burg and Washita are exposed. These forms 

 have not since been found in either locality 

 named and I have not been able to find any 

 record of their having been recognized, since 

 the time of their description, anywhere else in 

 this region, although, as will be shown later, 

 one or two of them have been collected by other 

 workers in this field. 



In working over the collections made in 

 January, 1909, by Messrs. W. F. Cummins 

 and W. Kennedy along the Rio Grande below 

 Eagle Pass, I found a number of fairly good 

 specimens of each of the species named. 



Our localities and collections are as fol- 

 lows: 

 Mouth of Cuevas Creek : 



Rostellaria? (Volutomorpha) texana Con. 



Cardium congestum Con. 

 One and one half miles above Las Isletas : 



Mactra texana Con. 



Pholadomya sp. 



Buccinopsis parryi Con. 



Rostellaria? (Volutomorpha) texana 'Gon. 

 Etc. 

 Wash 1 m. above Las Isletas : 



Sphenodiscus pleurisepta Con. 



Ostrea cortex Con. 



Mactra texana Con. 



