[24] It is mentioned by the author, as a chemical test or reagent: it may, by decomposing it by ignition with charcoal, or with an alkaline carbonate, be made to afford its earth for the preparation of barytic tests, but we are not aware that it is itself ever used as a test.
[25] They are attributed by the author to phosphorus. Is it supposed to be in the form of phosphuretted hydrogen? May not these be electrical phenomena?
[26] According to Dr. Meade, the Missouri ore affords only a trace of silver. (See Bruce's Minl. Journal, vol. 1, p. 10.)
[27] Mr. Schoolcraft thinks it may yield seventy per cent.—it gave him by analysis eighty-two per cent.
THE END.
Some inconsistent hyphenation and spelling in the original document has been preserved.
Typographical errors corrected in the text:
Page 24 musquitoes changed to mosquitoes
Page 64 develope changed to develop
Page 94 M'Gary's changed to M'Garey's
Page 103 20th changed to 29th
Page 110 brandt changed to brant
Page 113 Gasconage changed to Gasconade
Page 139 Quiquate changed to Quiguate
Page 155 emigate changed to emigrate
Page 155 Philips changed to Phillips
Page 156 Peora changed to Peoria
Page 160 scientic changed to scientific
Page 161 borers changed to borders
Page 170 M'Kane's changed to M'Kain's
Page 186 octohedral changed to octahedral
Page 191 precicision changed to precision
Page 196 develope changed to develop
Page 207 1719 date in paragraph 39a may be 1749
Page 208 irridescence changed to iridescence
Page 211 octohedrons changed to octahedrons
Page 217 annnally changed to annually
Page 246 some changed to same
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