Transcriber's Notes:Minor typopgraphical errors have been corrected silently; inconsistencies in spelling have not been changed.Footnotes have been moved to directly below the table or paragraph to which they refer. Where a single footnote has multiple anchors, there is no backward link.Depending on the browser and its settings, some of the symbols used may not display properly.Where there are mutiple footnotes to a single footnote anchor, the reverse link is not implemented. In these cases it is suggested to use the browser back button.Tables that were spread over two pages in the original work have been re-combined into a single table.Page 25, Table VIII: the header row contains duplicate values (last two columns) that could be typographical errors.Page 32-41: some table headers moved or inserted for consistency and better readability.Pages 86 and 87 have some section titles followed by numbers. These serve no obvious purpose, but have not been deleted.Page 87 (table): row 12 (zinc oxide), column 5:.00037is probably an error for.0037Page 124 contains a footnote without anchor; this has been moved to below the first paragraph of the page as an unnumbered footnote.Photos and other illustrations have been edited slightly to show more detail and remove dirt and scratches, except for the (micro)photographs of paint surfaces and other materials; the latter have only been edited slightly to show better contrast.Changes made to the text:Page 26:as discolored and turned brownchanged towas discolored and turned brown.Page 87: table row 3,0.00076—changed to0.00076.Page 94: row 6 (Concrete), } moved down one row as in Paint.Page 124: The note at the bottom of the page has been moved to directly underneath the first paragraph.Page 137:Pittsburghin caption changed toPittsburgas elsewhere in text (and in illustration itself).Page 142:prussian bluechanged toPrussian blue.Page 161:A.C.changed toA. C.(space added) as elsewhere.Page 177:pages 174 to 177changed topages 178 to 180.Pages 197-200: Order of photgraphs changed from vertical to horizontal.Page 211: One footnote anchor * changed to [29] as others in same row.Page 230:4500in formula changed to5400.Page 234: rows for Panel No. 2000: bracket added as elsewhere in table.Page 259 (Index):determinatingchanged todeterminingas in text.Page 259 (Index):Derbloomedchanged toDebloomedas in text.Page 260 (Index):Filometerschanged toFilmometersas in text.Page 261 (Index):Grinding Pigmentsmoved to proper place in alphabetic order.Page 263 (Index):Parilla Oilchanged toPerilla Oilas in text.Page 264 (Index):Derbloomedchanged toDebloomedas in text.
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