THE WISCONSIN METEORITES: 



WITH SOME REMARKS ON WIDMANNSTATTIAN FIGURES. 



These meteorites were first brought to my notice by Mr. 

 I. A. Lapham, of Wisconsin; and his attention was called to 

 them by Mr. C. Daflinger, Secretary of the German Natural 

 History Society of Wisconsin. They were discovered in the 

 town of Trenton, Washington County, Wisconsin, and I have 

 called them the "Wisconsin Meteorites." Up to the present 

 time fragments have been found, indicating that these meteor- 

 ites were of the same fall, and separated at no great elevation. 

 They were found within a space of ten or twelve square yards, 

 very near the north line of the forty-acre lot of Louis Korb, in 

 latitude 43° 22' north, and longitude 88° 8' west from Green- 

 wich, and about thirty miles north-west of Milwaukee. 



They were so near the surface as to be turned up with the 

 plow; they weigh sixty, sixteen, ten, and eight pounds respec- 

 tively, and present the usual pitted and irregular surfaces. 



The largest of the meteorites in its extreme dimensions is 



fourteen inches long, eight inches wide, and four inches thick, 



weighing sixty-two pounds. Its specific gravity is 7.82, and 



composition : 



Iron 91.03 



Nickel 7.20 



Cobalt 53 



Phosphorus 14 



Copper minute quantity. 



Insoluble residue 45 



A polished surface when etched gives well-marked Wid- 

 mannstattian figures. There is something, however, peculiar 

 about the markings on this iron, which is doubtless common 

 to other irons, but which has heretofore escaped my observa- 

 tion; and I can not discover, in a hasty investigation, that it 

 has been noticed by others. My attention was called to this 

 peculiarity by Mr. Lapham, on a slice of the meteorite I sent 



