Smithsonian Institution - United States National Museum - Bulletin 240 / Contributions From the Museum of History and Technology / Papers 34-44 on Science and Technology

Compiler's Notes
Bulletin 240 was compiled from individual Papers posted on Project Gutenberg and the Index for this volume:
Paper 34 Paper 35 Paper 36 Paper 37 Paper 38 Paper 39 Paper 40 Paper 41 Paper 42 Paper 43 Paper 44
Transcriber's Notes for each Paper and the Index follows the text of that Paper/Index.

SMITHSONIAN INSTITUTION
UNITED STATES NATIONAL MUSEUM
BULLETIN 240

SMITHSONIAN PRESS