days for an answer, chemical telegraph and has some relation to an elevated chamber with the lower end of for improvement in machinery for Shaving Shingle. Patented May 16, 1848. the guage tube containing the mercury reser- yoir, and having the reservoir of such capaci- To Henry F. Briggs, of… … =e = | ~ gland spoken of. Mr. Stillman introduces 16, 1848. naptha upon thesurface of the mercury to pre- To John Eppley, of York, Penn., for im- vent the mercury from oxidising and soiling ing the noncompressible nature of water, it provement in machines for bending Sheet Me- This is a section…
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