[Illustration]




SCIENTIFIC AMERICAN




A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS,
CHEMISTRY, AND MANUFACTURES.




NEW YORK, DECEMBER 28, 1867.

Vol. XVII.--No. 26. [NEW SERIES.]

$3 per Annum [IN ADVANCE.]


* * * * *

Contents: (Illustrated articles are marked with an asterisk.)

*Improvement in Hulling and Cleansing Hominy

Nitro Glycerin