The Scientific American---Commencement of Volume Xv

1866 Scientific American  
P 'J that closing the cover opens the bottOm and discharges its con-REGISTERING APPARA'fUS FOR PRINTING RESSE!;.-AHES .
doi:10.1038/scientificamerican06301866-5 fatcat:kl6tdhkf7jfslpsekuv4fpowom