File:The American journal of science (1903) (18153265451).jpg

Title: The American journal of science
Identifier: americanjourna4151903newh (find matches)
Year: 1880 (1880s)
Authors:
Subjects: Science
Publisher: New Haven : J. D. & E. S. Dana
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
Campbell and Howe—Meteoric Iron from Virginia. 471 helium, and in this there was but a trace. In the case of the present meteorite the presence of helium seems probable but not certain. As regards the etched surfaces, they do not resemble those of the '"Staunton." Mr. H. L. Preston has called our atten- tion to the complete absence of the club-shaped " kamacite " blades, so prominent in the " Staunton." These are also lack- ing in one other mass of the " Staunton," and it was chiefly from this consideration that Brezina held that one to be a dis- tinct fall.
Text Appearing After Image:
Mr. Wirt Tassin of the United States National Museum has had the kindness to compare the photographs of the etched surfaces with the section of the " Staunton " iron described by Mallet in 1871, and writes as follows: " It shows quite a dif- ference in structure. The 'taenite' plates in the museum specimen are smaller, averaging only half the size of those in the photograph. The specimen also shows numerous line lines of ' schreibersite,' often regularly arranged—especially in the ' plessite,' and are occasionally so abundant as to give to it (the ;plessite') a stippled appearance. These are lacking in the photograph, although this may be due to differences in illumi- nation. Finally, as you have already remarked, there is the complete absence of the bulb- or club-like ' kamacite' blades." We propose to call this meteorite " Staunton, No. 7." The original weight of the meteorite was somewhat more than seven kilos ; its weight prior to the recent cutting was 7'15 kilos; its present weight is 6'0-t kilos. Washington and Lee University, Lexington, Va.

Note About Images