elves, numbered from top to the light-casing, the upper being fitted to slide in a effect upon the rapidity of cleaning, and the disap- bottom. A folding-door is provided, which, when the segmental guideway on the light-casing so that it can pearance of foreign substances in no wise follows Fara-… … A metal which has a brightly polished surface may be A NEW FORM OF STEREOPTICON. cleaned without destroying the polish. 0+ - —-____ front, closes both the rectangular portion and an open- lenses, having a prism interposed between them, so AN IMPROVISED HYDRAULIC PRESS, ing in the octagonal portion.…
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