TY  - BOOK
TI  - Scientific American Supplement No. 819, September 12, 1891
AV  - T 
PY  - 2005///
PB  - Project Gutenberg
KW  - Science -- Periodicals
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/14990
ER  -