TY  - SER
TI  -  Scientific American Supplement, No. 312, December 24, 1881 
AV  - T 
PY  - 2006///
PB  -  Project Gutenberg, 
KW  -  Science -- Periodicals
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/17817
ER  -